PHY2053 Physics 1, Test 3 Exam With Answers - _ 1. The...

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____1.The impulse experienced by a body is equivalent to its change in:a.velocity.b. kinetic energy.c.momentum.d.None of the above choices are valid.
____2.Alex throws a 0.15-kg rubber ball down onto the floor. The ball's speed just before impact is 6.5 m/s, and justafter is 3.5 m/s. What is the change in the magnitude of the ball's momentum?
____3.A crane drops a 0.30 kg steel ball onto a steel plate. The ball's speeds just before impact and after are 4.5 m/sand 4.2 m/s, respectively. If the ball is in contact with the plate for 0.030 s, what is the magnitude of theaverage force that the ball exerts on the plate during impact?
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