Two toy cars are about to collide! Car A has a mass of 450 g and is travelling at 2.25 m s–1. Car B has a mass of 350 g and is travelling in the opposite direction at 2.75 ms–1. (Define left to be the positive x-direction.) Unless directed in this question, do not round your answers. (d) Straight after the collision they stick together but are still moving. What direction are they moving in, left or right?    (e) What is the kinetic energy before and after the collision? Round your answers to whole integers. (Units: milijoules) Before =      mJ After =         mJ  (f) In this situation, was energy (E), momentum (p) or both (BOTH) conserved?

University Physics Volume 1
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Chapter9: Linear Momentum And Collisions
Section: Chapter Questions
Problem 96AP: Two carts on a straight track collide head on. The first cart was moving at 3.6 m/s in the positive...
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Two toy cars are about to collide!

Car A has a mass of 450 g and is travelling at 2.25 m s–1. Car B has a mass of 350 g and is travelling in the opposite direction at 2.75 ms–1. (Define left to be the positive x-direction.) Unless directed in this question, do not round your answers.

(d) Straight after the collision they stick together but are still moving. What direction are they moving in, left or right?   

(e) What is the kinetic energy before and after the collision? Round your answers to whole integers. (Units: milijoules)

Before =      mJ

After =         mJ 

(f) In this situation, was energy (E), momentum (p) or both (BOTH) conserved? 

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