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Question

d and e

1. A truck of mass m, and a car ot mass m. (note m, > m.) in a demolition derby are about to crash into one another. The truck is moving with an initial speed of |vi| at an angle of o and the car is moving with an initial speed of Jveil at an angle of 0, as indicated in the figure. Only the forces between the car and truck are significant during the collision. The collision is totally inelastic. a. Our goal is to determine the final velocity of the automobiles. Before we do anything, define what you would like to include in your system. b. Write a Newton's 2nd Law equation for this system. c. During the collision, which automobile (car or truck) exerted a larger average force on the other? Explain your answer. d. Find the final velocity of the automobiles after the collision. Your final answer should be a vector in component form in terms of variables given in the problem statement. e. Write an expression for the change in kinetic energy of the system from before the collision to after the collision. Your final answer should be in terms of variables given in the problem statement. Since you determined the final velocity of the automobiles in the last part, that is now a "known variable" and can appear in your change of kinetic energy expression.
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Transcribed Image Text:1. A truck of mass m, and a car ot mass m. (note m, > m.) in a demolition derby are about to crash into one another. The truck is moving with an initial speed of |vi| at an angle of o and the car is moving with an initial speed of Jveil at an angle of 0, as indicated in the figure. Only the forces between the car and truck are significant during the collision. The collision is totally inelastic. a. Our goal is to determine the final velocity of the automobiles. Before we do anything, define what you would like to include in your system. b. Write a Newton's 2nd Law equation for this system. c. During the collision, which automobile (car or truck) exerted a larger average force on the other? Explain your answer. d. Find the final velocity of the automobiles after the collision. Your final answer should be a vector in component form in terms of variables given in the problem statement. e. Write an expression for the change in kinetic energy of the system from before the collision to after the collision. Your final answer should be in terms of variables given in the problem statement. Since you determined the final velocity of the automobiles in the last part, that is now a "known variable" and can appear in your change of kinetic energy expression.
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