The coefficient of kinetic friction between the box and plane is 0.0300. (See picture below) What is the maximum speed the vehicle can have at point B and still remain on the track? What average force was exerted to slow the first dolphin if it was moving horizontally? This is the principal mode of operation of roller coasters (without any propulsion systems installed in the cars) which allows them to negotiate a series of slopes and hills without running out of energy. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. (230 kg) golden tabby Bengal tiger that lives in a pen next to the ride. Figure Height is #h//2,:. Let the work done by the air resistance when the skier goes from A to B along the given hilly path be 2000 J. Qualitative The coefficient of static friction between the tires and the wall is 0.68. > philadelphia tobbogan train cars weigh on average 800#'S FOR WOODEN COASTERS, > Hi, does anyone have any idea how much the average roller An external force is applied to the top block at an anglewith the horizontal. Assume there is no friction or air resistance between Points A and C. How fast is the roller-coaster moving at Point B? Use a free-body diagram in your answer. The best answers are voted up and rise to the top, Not the answer you're looking for? 3. a) How fast is the roller coaster moving at point B? The situation is same as at #t=0#, where #v_y =0#. Browse other questions tagged, Start here for a quick overview of the site, Detailed answers to any questions you might have, Discuss the workings and policies of this site. The chain return is now usually located inside the spine of the track rather than a separate component. height h, Q:As shown below, a wire loop is immersed in a 0.8 T B-field (the direction of the field is shown in, Q:The 20-g bullet is travelling at 400 m/s when it becomes embedded in the You'll get a detailed solution from a subject matter expert that helps you learn core concepts. (a) When rebuilding his cars engine, a physics major must exert3.001023.00102N of force to insert a dry steel piston into a steel cylinder. In this case, the changing position of the roller-coaster reflected a change in the energy of the system, we are not asked to find time, and there are no significant unknown energy losses from the system. If L=6 H, determine R. For a better experience, please enable JavaScript in your browser before proceeding. T Rolling friction for trains is small, and consequently, trains are very energy-efficient transportation systems. As he got older, he decided to build and use a staircase instead. (b) Find the velocity of the box as it reaches the end of the plane, if the length of the plane is 2 m and the box starts at rest. (Drag area is2.44m2)2.44m2)Assume all values are accurate to three significant digits. Free shipping for many products! Many cars are roughly a ton. Both wood and steal. (c) Compare each force with his weight. (b) Calculatedr/dtdr/dtand then show that the speed of the particle is a constantA.A. Mass of the first block is There is however one complication: my ideal scenario doesn't account for any energy losses due to friction between car and track or air drag losses. Your question is solved by a Subject Matter Expert. The car encounters a loop of radius R = 18.0 As cars travel, oil and gasoline leaks onto the road surface. The coefficient of friction on the left surface is 0.30, and on the right surface 0.16. Explain how this allows the curve to be taken at the greatest speed. (c) Which premise is unreasonable, or which premises are inconsistent? Energy is the same top and bottom, Ke at bottom, Pe at top The safety features on a roller-coaster have a specific range of height and weight that passengers must be within. You can solve for the motion between Point C and D through a combination of kinematics and dynamics. Minimising the environmental effects of my dyson brain, The difference between the phonemes /p/ and /b/ in Japanese. What is the ideal speed to take a 100.0-m-radius curve banked at a20.020.0angle? Energy is almost always the most efficient way to approach these problems as long as enough information is given. at the best online prices at eBay! A tugboat pulls the front barge with a horizontal force of magnitude20.0103N,20.0103N,and the frictional forces of the water on the front and rear barges are8.00103N8.00103Nand10.0103N,10.0103N,respectively. Kingda Ka is themed as a mythical tiger and is named after the 500 lb. If you wish to reduce the stress (which is related to centripetal force) on high-speed tires, would you use large- or small-diameter tires? WebA 725 kg roller coaster car is at the top of a roller coaster car is at the top of a roller coaster as shown below. = mgh where m is the mass of your cart in grams, h is the height of your track and g=9.8 N/kg to calculate the potential energy. Modern roller coasters have vertical loops like the one shown here. Race car drivers routinely cut corners, as shown below (Path 2). (c) Determined2r/dt2d2r/dt2and show thatais given byac=r2.ac=r2. During its fall, how much work is done on the mouse by air resistance? WebQuestion: In the figure, a frictionless roller coaster car of mass m=661 kg tops the first hill with speed vo= 10.3 m/s at height h = 40.8 m. How much work does the gravitational force do on the car from that point to (a) point A, (b) point B, and (c) point C? Others use P.E. (b) On wet concrete. > wat about for steel coasters? A skydiver is at an altitude of 1520 m. After 10.0 seconds of free fall, he opens his parachute and finds that the air resistance,FDFD, is given by the formulaFD=bv,FD=bv,wherebis a constant andvis the velocity. > just a thought > Originally the PTC cars (3 seater) weighed about 1500 to 1600 lbs. (The scale exerts an upward force on her equal to its reading.) Average Weight of a Roller Coaster Cart in Kg Pe_Emery.Brandt.286 April 26, 2022 A Roller Coaster Vehicle Has A Mass Of 500 Kg When Fully Loaded With Passengers A If The Vehicle Youtube Physics. Total Internal Reflection and Critical Angle to Measure Index of Refraction As the drawing shows, an, A:Given (b) What is its acceleration once it starts to move, if that force is maintained? A 2.00 kg block (mass 1) and a 4.00 kg block (mass 2) are connected by a light string as shown; the inclination of the ramp is40.040.0. N D) 908 N In the figure, the coefficient of kinetic friction between the surface and the blocks isk.k. If there is no significant non-conservative force (as is the case in the first question) then all three versions of the equation are equivalent. Those will also be different than the wide variety of different steel coaster trains, as will the Gerstlauer wood coaster trains and cars. It's going to vary from coaster to coaster, and car to car. Find the value of the coefficient of kinetic friction between the road and crate if the crate slides 50 m on the road in coming to rest. If an object is accelerating vertically, the normal force is less than or greater than the weight of the object. It is equally correct to include it. Some problems contain multiple force vectors acting in different directions on an object. Include a free-body diagram in your solution. A physics major is cooking breakfast when she notices that the frictional force between her steel spatula and Teflon frying pan is only 0.200 N. Knowing the coefficient of kinetic friction between the two materials, she quickly calculates the normal force. What is the total mechanical energy of the roller coaster cart at point A? Find the potential energy of a particle subjected to this force when the particle is at a distance D from P, assuming the potential energy to be zero when the particle is at P. Check Your Understanding suppose the radius of the loop-the-loop in Example 7.9 is 15 cm and the toy car starts from rest at a height of 45 cm above the bottom. Using concepts related to centripetal force and Newtons third law, explain what force stretches the string, identifying its physical origin. The values for Point D can be put into the equation directly from your picture. ), A large centrifuge, like the one shown below, is used to expose aspiring astronauts to accelerations similar to those experienced in rocket launches and atmospheric reentries. (c) Does this acceleration seem large to you? (b) How far does the diamond fall before it reaches 90 percent of its terminal speed? and find your body weight during a time when the acceleration was reading 2 G's. a lot. A crate of mass 100.0 kg rests on a rough surface inclined at an angle of37.037.0with the horizontal. A 1250-W toaster, a 320-W blender, and a 75-W lamp are, Q:True or FalseThe planet that has the longest day is mercury, A:Actually, the planet with the longest day in our solar system is Venus, not Mercury. Find the minimum initial height hminat which the car can be released that still allows the car to stay in contact with the track at the top of the loop. (a) Calculate his velocity when he leaves the floor. 1=45.5 Calculate the minimum forceFhe must exert to get the block moving. The coefficient of sliding friction is known to be 0.300 for this situation. A 0.500-kg potato is fired at an angle of80.080.0above the horizontal from a PVC pipe used as a potato gun and reaches a height of 110.0 m. (a) Neglecting air resistance, calculate the potatos velocity when it leaves the gun. A boater and motor boat are at rest on a lake. Example 3: In this rollercoaster question, the track is older, so the 15 kg cart experiences an average frictional force of 50 N while on the track. Express your answer numerically, in joules. At Point B, part of the gravitational potential energy of the roller-coaster has been converted to kinetic energy, and the roller-coaster has a speed of 30 m/s. Hi, does anyone have any idea how much the average roller coaster carriage weighs? (a) If half of the weight of a small1.00103-kg1.00103-kgutility truck is supported by its two drive wheels, what is the maximum acceleration it can achieve on dry concrete? (c) What does the scale read if the elevator moves upward at constant velocity? You can ask a new question or browse more Physics questions. Define centripetal force. He goes from zero to the velocity found in (a) in a distance of 0.300 m. (c) Calculate the force he exerts on the floor to do this, given that his mass is 110.0 kg. The values for Point can be put into the equation directly from your picture. (b) What is the minimum coefficient of friction needed for a frightened driver to take the same curve at 20.0 km/h? In Earths frame of reference, there is no centrifugal force pulling the mass away from the center of rotation, yet there is a force stretching the string attaching the mass to the nail. Roller coasters mostly rely on two simple principles: conversion of Potential Energy to Kinetic Energy and vice versa, and conservation of energy. The tallest lift hill in the world is Carowinds Fury 325 at 325 feet tall (99.06 meters). When a body of mass 0.25 kg is attached to a vertical massless spring, it is extended 5.0 cm from its unstretched length of 4.0 cm. and others use U. m at ground level, as shown. Calculate the tension in the two ropes if the person is momentarily motionless. > coaster carriage weighs? (b) During strenuous exercise, it is possible to exert forces to the joints that are easily 10 times greater than the weight being supported. (b) Find the angle of the slope down which this box could move at a constant velocity. One depended upon the speed, while the other was proportional to the square of the speed. Only two forces act on the mass. for Part B for Part B undo for Part B redo for Part B reset for Part B keyboard shortcuts for Part B help for Part B An object (A) of mass m = 28.5 kg is moving in a direction that makes angle of 62 north of west, Q:Self-Paced Problem 1: (b) What is the force in the coupling between the 37th and 38th cars (this is the force each exerts on the other), assuming all cars have the same mass and that friction is evenly distributed among all of the cars and engines? (c) On ice, assuming thats=0.100s=0.100, the same as for shoes on ice. What is the work done by ? = As a result, the particle moves along a straight path from a Cartesian coordinate of (0m,0m) to (5m,6m) . Repeat the preceding problem, but this time, suppose that the work done by air resistance cannot be ignored. Explain, considering especially that tape can stick to vertical walls and even to ceilings. At what anglebelow the horizontal will the cage hang when the centripetal acceleration is 10g? Calculate the velocity a spherical rain drop would achieve falling from 5.00 km (a) in the absence of air drag (b) with air drag. It depends which roller coater because each roller coaster has a different weight. If the car goes over the top at just the right speed, gravity alone will supply the centripetal force. I couldn't say exactly as I wasn't at the ride at the time, but my wife (about 55 kg) had to go in the car with the smaller child (about 25 kg) and the What is the magnitude and direction. Ein the system at the start = Ein the system at the end + E that left the system. It is equally fine to pick the lowest point considered in the problem (Point D) to be h = 0. Arrow cars (2 seaters) weighed around The mass of an electron is9.111031kg9.111031kg. the initial height 54.0 m is great enough so that the car never loses contact When the freight car begins to move, the string makes an angle of35.035.0with the vertical. The dogs have average masses of 19.0 kg, and the loaded sled with its rider has a mass of 210 kg. Suppose you have a 120-kg wooden crate resting on a wood floor, with coefficient of static friction 0.500 between these wood surfaces. Explain. Such a large normal force is dangerous and very uncomfortable for the riders. The cars have become heavier over the past 20 years CP1 Fall 2019 page 1 of 1. View this solution and millions of others when you join today! characteristics The radius of the curve is 310 m. What is the angle of banking of the highway? P (a) Calculate the minimum forceFhe must exert to get the block moving. Therefore, as the cart approaches the bottom of the hill where its gravitational potential energy is converted into Calculate the centripetal force on the end of a 100-m (radius) wind turbine blade that is rotating at 0.5 rev/s. How do I determine the molecular shape of a molecule? A car is moving at high speed along a highway when the driver makes an emergency braking. Many amusement parks have rides that make vertical loops like the one shown below. [Hint: For (b) and (c), you will need to use(d/dt)(cost)=sint(d/dt)(cost)=sintand(d/dt)(sint)=cost.(d/dt)(sint)=cost. (a) What is the maximum frictional force in the knee joint of a person who supports 66.0 kg of her mass on that knee? My kids went on a roller coaster type ride on the weekend. the end. Including Wnc in some form is more general and gives an equation that is true in all situations, including those with non-conservative forces such as the second question in this problem. Which path shown below will the lunch box take when she lets go? (c) Which premises are unreasonable or inconsistent? A dipole with charges -q and +q is placed in ana electric field. Roller Coasters, Parks & Attractions Message Board. Physics Stack Exchange is a question and answer site for active researchers, academics and students of physics. Because you are given information about the motion of the roller-coaster, you can solve for force using energy (or Newtons Second Law) rather than plugging into the definition of friction. 250 pF has a charge of magnitude 0.146 C on, Q:d) What is the magnitude and direction of Vem i? http://www.rcdb.com/ig222.htm?picture=6, > ok so how much does a normal car weigh in comparison to a Watch the mass inside the tube carefully, (1 kg = 2.2 lbs.) Simple friction is proportional to the normal force. Railroad tracks follow a circular curve of radius 500.0 m and are banked at an angle of5.05.0. While the transfer of energy between two machine par, In physics, work is the product of the net force in direction of the displacement and the magnitude of this displacement or it can also be defined as the energy transfer of an object when it is moved for a distance due to the forces acting on it in the d. Always analyze the direction in which an object accelerates so that you can determine whether. (a) Find the acceleration of the system. (a) Show that(as defined as shown) is related to the speedvand radius of curvaturerof the turn in the same way as for an ideally banked roadwaythat is,=tan1(v2/rg).=tan1(v2/rg). The coefficient of kinetic friction between the blocks and the surface is 0.25. (c) What is the average force on the potato in the gun? WebFind many great new & used options and get the best deals for LEGO FRIENDS: Amusement Park Roller Coaster (41130) Complete Boxed Retired! Start your trial now! roller coaster with weight requirement for a car, We've added a "Necessary cookies only" option to the cookie consent popup. A half-full recycling bin has mass 3.0 kg and is pushed up a40.040.0incline with constant speed under the action of a 26-N force acting up and parallel to the incline. (c) Which premise is unreasonable, or which premises are inconsistent? As shown below, ifF=60.0NF=60.0NandM=4.00kg,M=4.00kg,what is the magnitude of the acceleration of the suspended object? #=sqrt (18^2+v_y^2)# What is it? (Note that this is a small effect and in most toilets the rotation is caused by directional water jets.) The terminal velocity of a person falling in air depends upon the weight and the area of the person facing the fluid. B. How far away, A:Radiusofnucleus=n=10-15mRadiusoforbitalelectron=e=10-10mScalemodelradiusofnucleus=N=1.4, Q:Determine the time constant of the LR circuit. Dont I need to know the angles the hills make with the horizontal. It only takes a minute to sign up. Draw the free body diagrams for the car going around a horizontal curve, the bottom of a vertical loop, and the top of a vertical loop in which the cart is upside down. But in both cases, if you initially recognize that you have the information to work the problem with energy, you can solve it in a single step. A car rounds a curve and encounters a patch of ice with a very low coefficient of kinetic fiction. Once it begins to move, what is its acceleration and what reduced force is necessary to keep it moving upward at constant speed? (b) What is the minimum coefficient of friction between her shoes and the cliff? Do not neglect the gravitational force. A student is attempting to move a 30-kg mini-fridge into her dorm room. One crazy one that I've seen posted is that Skyrush's trains weigh 13 tons! d Dont I need to know the coefficient of friction to solve for stopping force? WebStart your trial now! Located at the origin, an electric car of massmis at rest and in equilibrium. Net force =Fnet=30-20=10Na=2m/s2, Q:The parking brake on a 2000 kg Cadillac has failed, and it is rolling slowly, at 4.00 mph, toward a, Q:1. Ionizing radiation is a type of radiation that has enough energy to ionize atoms, Q:Activity on the Sun, such as solar flares and coronal mass ejections, hurls large numbers of charged, Q:4. Also use g = 10 m/s2. A mouse of mass 200 g falls 100 m down a vertical mine shaft and lands at the bottom with a speed of 8.0 m/s. (d) How high has the elevator moved above its original starting point, and what is its final velocity? Find the magnitude of the force the garbage exerts on the floor of the service elevator? The car is released from rest at a height h = 54.0 m above the ground and After a mishap, a 76.0-kg circus performer clings to a trapeze, which is being pulled to the side by another circus artist, as shown here. In this case, we are given information about the energy at A and are asked for information B. Show that the maximum angle of an incline above the horizontal for which an object will not slide down is=tan1s.=tan1s. Intamin (older) cars were quite heavy around 2800 each and (newer) around 2500 each. A students backpack, full of textbooks, is hung from a spring scale attached to the ceiling of an elevator. Find the kinetic energy K of the car at the top of the loop. If the thrust of the motor is a constant force of 40.0 N in the direction of motion, and if the resistive force of the water is numerically equivalent to 2 times the speedvof the boat, set up and solve the differential equation to find: (a) the velocity of the boat at timet; (b) the limiting velocity (the velocity after a long time has passed). m/s Assume that only half the weight of the car is supported by the two drive wheels and that the coefficient of static friction is involvedthat is, the tires are not allowed to slip during the acceleration. (a) Find its initial acceleration if it takes off vertically. each. (a) First suppose the car barely makes it around the loop; at the top of the loop, the riders are upside down and feel weightless. 15.0 V (a) The elevator accelerates upward from rest at a rate of1.20m/s21.20m/s2for 1.50 s. Calculate the tension in the cable supporting the elevator. The left end of the spring is fixed, but the right end, at the equilibrium position x=0 , is moving with speed v in the x-direction. When it is released, the block travels along a frictionless, horizontal surface to point , the bottom of a vertical circular track of radius R = 1.00 m, and continues to move up the track. The CERN particle accelerator is circular with a circumference of 7.0 km. (a) Find the acceleration of the box. An 850 kg roller-coaster is released from rest at Point A of the track shown in the figure. (b) Calculate the force in the coupling between the dogs and the sled. The car encounters a loop of radius R = 18.0 m at ground level, as shown. 1 of 1 (a) What maximum force can you exert horizontally on the crate without moving it? On average, these carts can weight between 600 and about 1000 pounds each. travels down a slope, which turns up at > coaster carriage weighs? Can any type of force (for example, tension, gravitational force, friction, and so on) be a centripetal force? How do you find density in the ideal gas law. (b) The car goes over the top at slower than this speed? (b) What is unreasonable about the result? (d) If the elevator had no brakes and the cable supporting it were to break loose so that the elevator could fall freely, what would the spring scale read? _________m/s Homework Equations Sum of forces in the radial direction = -m (v^2)/R The Attempt at a We say that the car at that point has a Potential Energy $U$ according to: $U=mgh_1$, where $g=9.81\:\mathrm{ms^{-2}}$ the Earth's acceleration constant, $m$ is the mass of the car (and riders) and $h_1$ that height above the reference line. About yea much, give or take. Two of the forces areF1=(3i+5j6k)NF1=(3i^+5j^6k^)NandF2=(4i7j+2k)N.F2=(4i^7j^+2k^)N.Find the third force. (a) What is the radius of a bobsled turn banked at75.075.0and taken at 30.0 m/s, assuming it is ideally banked? A. AL You are using an out of date browser. B&M sit down, or stand up, or inverted? The weight of roller coaster carts varies greatly with the roller coaster style. slides along a frictionless track. A service elevator takes a load of garbage, mass 10.0 kg, from a floor of a skyscraper under construction, down to ground level, accelerating downward at a rate of1.2m/s21.2m/s2. Is a collection of years plural or singular? The weight of roller coaster carts varies greatly with the roller coaster style. Calculate the acceleration of the carts and the tension in the cord. It is at rest and in equilibrium. (b) How much time elapses before it reaches the bottom of the track? It may not display this or other websites correctly. When starting a foot race, a 70.0-kg sprinter exerts an average force of 650 N backward on the ground for 0.800 s. (a) What is his final speed? Its position at any time is given byx(t)=pt3+qt2x(t)=pt3+qt2wherepandqare constants. What is its speed at the top of the loop? (Velocity and Acceleration of a Tennis Ball). >. Suppose a child is riding on a merry-go-round at a distance about halfway between its center and edge. If the top of the next hill is 13 meters, what is the kinetic energy of the roller coaster on this hill? Experts are tested by Chegg as specialists in their subject area. 6. What is the weight of the space probe on that planet? for Part A for Part A undo for Part A redo for Part A reset for Part A keyboard shortcuts for Part A help for Part A (c) What is the position of the space probe after 15.0 s, with initial position at the origin? Distance (cm) There would be a normal force pointing up and mg pointing down. Are we talking about filled with fat ACErs or without? KE = 147150 Joules. (Figure 1)A roller-coaster car may be represented by a block of mass 50.0 kg . A block of mass 0.500 kg is pushed against a horizontal spring of negligible mass until the spring is compressed a distance x (Fig. A plumb bob hangs from the roof of a railroad car. The magnitude of the force on a particle increases as the cube of the distance from that point; that is Fr3 , if the distance from P to the position of the particle is r. Let b be the proportionality constant, and write the magnitude of the force as F=br3. An observer on the ground concludes that the forces on the cart are the force of gravity and the support from the track. (a) What is the force of the car seat on the child at point A? (a) What is x? A time-dependent force ofF(t)F(t)is applied at timet=0t=0, and its components areFx(t)=ptFx(t)=ptandFy(t)=n+qtFy(t)=n+qtwherep,q, andnare constants. Explain in an inertial frame of reference (Earth is nearly one) what pins the riders to the wall, and identify all forces acting on them. We reviewed their content and use your feedback to keep the quality high. Q:Which model shows how light waves react with a red jacket? Take the size across of the drop to be 4 mm, the density to be1.00103kg/m31.00103kg/m3, and the surface area to ber2r2. Mass cannot be divided out of this equation because it does not appear in all terms. Two blocks are connected by a massless rope as shown below. (c) At Point C #approx 33.58m//s# Angle of inclination for M1 is Find the change, Q:A 800 lb horse pulls a 200 lb cart with While some can be, most are powered with gravity. About Us Indicate the direction of the acceleration on each diagram. An object with massmmoves along thex-axis. ok so how much does a normal car weigh in comparison to a rollercoaster carriage? At a post office, a parcel that is a 20.0-kg box slides down a ramp inclined at30.030.0with the horizontal. Still others may write it as KE1 + PE1 + Eadded to the system = KE2 + PE2 + Eleaving the system. Get access to millions of step-by-step textbook and homework solutions, Send experts your homework questions or start a chat with a tutor, Check for plagiarism and create citations in seconds, Get instant explanations to difficult math equations, A machine is a device that accepts energy in some available form and utilizes it to do a type of work. At any point #x# Assume that the force is exerted parallel to her legs. Originally the PTC cars (3 seater) weighed about 1500 to 1600 lbs. WebA roller-coaster car (Fig. These losses are fairly difficult to model mathematically, at least accurately. All are equivalent and refer to the same thing. An elevator filled with passengers has a mass of1.70103kg1.70103kg. Is it a bug? The ride's sign and station all have mythical Indian-style theming. Suppose the ride starts where the car is drawn at a height $h_1$ above a common reference line (like the horizon). (a) Find the tension in the rope and the force that the mountain climber must exert with her feet on the vertical rock face to remain stationary. (a) Calculate the minimum coefficient of friction needed for a car to negotiate an unbanked 50.0 m radius curve at 30.0 m/s. Find the net force on this object for any timet. A helicopter with mass2.35104kg2.35104kghas a position given byr(t)=(0.020t3)i+(2.2t)j(0.060t2)k.r(t)=(0.020t3)i^+(2.2t)j^(0.060t2)k^. (b) What is unreasonable about the result? It depends which roller coater because each roller coaster has a different weight. As the cart moves through the loop, it is moving in a circle and therefore it is accelerating. Pe = m g h = 80 * 10 * 30 Joules O+ Flow rate Q=550 kg/h =0.153kg/s Express your answer numerically, in joules. WebFind many great new & used options and get the best deals for LEGO FRIENDS: Amusement Park Roller Coaster (41130) Complete Boxed Retired! If an object is to rest on an incline without slipping, then friction must equal the component of the weight of the object parallel to the incline. WebAs it is released, its velocity is 4.4 m/s. Neglecting frictional losses, what is the expected speed of the coaster as it passes over the top of the To maintain a constant speed, the force provided by a cars engine must equal the drag force plus the force of friction of the road (the rolling resistance). (Hint:since the distance traveled is of interest rather than the time,xis the desired independent variable and nott. Use the Chain Rule to change the variable:dvdt=dvdxdxdt=vdvdx.)dvdt=dvdxdxdt=vdvdx.). A roller coaster car with its passengers has a mass of 220 kg and it goes through a series of horizontal and vertical curves. What is the direction of the force exerted on you by the car seat? characteristics, A:Ionizing Radiation

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