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An automobile of mass 1500 kg moving at 25 m/s collides with a truck of mass 4500 kg at rest. The bumpers of the two vehicles lock together during the crash.Compare the force exerted by the car on the truck with that exerted by the truck on the car during the collision. Is on force larger than the other or are they equal in magnitude to each other?What is the final velocity of the car and truck just after the collision.Now this time the car and the truck bounce off each other completely elastically.Compare the force exerted by the car on the truck with that exerted by the truck on the car during the collision. Is one force larger than the other or are they equal in magnitude?What are the final velocities of the car and truck just after the collision?

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Jean Keeling
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16 Nov 2019
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Related textbook solutions

Physics: Principles with Applications
7th Edition, 2013
Giancoli
ISBN: 9780321625922

Related questions

An automobile of mass 1500 kg moving at 25.0 m/s collides withatruck of mass 4500 kg at rest. The bumpers of the two vehicleslocktogether during the crash.



a. compare the force exerted by the car on the truck withthatexerted by the truck on the car during the collision. Is oneforcelarger than the other or are they equal in magnitude?




b. What is the final velocity of that car and truck just afterthecollision? Show your calculations.

Most of us know intuitively that in a head-on collision between a large dump truck and a subcompact car, you are better off being in the truck than in the car. Why is this? Many people imagine that the collision force exerted on the car is much greater than that exerted on the truck. To substantiate this view, they point out that the car is crushed, whereas the truck is only dented. This idea of unequal forces, of course, is false; Newton's third law tells us that both objects are acted upon by forces of the same magnitude. The truck suffers less damage because it is made of stronger metal. But what about the two drivers? Do they experience the same forces? To answer this question, suppose that each vehicle is initially moving at 9.00 m/s and that they undergo a perfectly inelastic head-on collision. Each driver has a mass of 80.0 kg. Including the masses of the drivers, the total masses of the vehicles are 800 kg for the car and 4000 kg for the truck. If the collision time is 0.120 s, what force does the seat belt exert on each driver?

Most of us know intuitively that in a head-on collision between a large dump truck and a subcompact car, you are better off being in the truck than in the car. Why is this? Many people imagine that the collision force exerted on the car is much greater than that exerted on the truck. To substantiate this view, they point out that the car is crushed, whereas the truck is only dented. This idea of unequal forces, of course, is false; Newton’s third law tells us that both objects are acted upon by forces of the same magnitude. The truck suffers less damage because it is made of stronger metal. But what about the two drivers? Do they experience the same forces? To answer this question, suppose that each vehicle is initially moving at 8.00 m/s and that they undergo a perfectly inelastic head-on collision. Each driver has mass 80.0 kg. Including the masses of the drivers, the total masses of the vehicles are 800 kg for the car and 4.00 × 103 kg for the truck. If the collision time is 0.120 s, what force does the seat belt exert on each driver?

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