211 (S07) Exam #3 - MC

211 (S07) Exam #3 - MC - Multiple Choice10Questions Please...

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Multiple Choice –  10 Questions                   x 2pts =                  Please write your answers in the space provided. # correct score 1. A 2-kg block slides to the right at 12 m/s on a frictionless table and collides with a 6- kg block that is moving to the left, also at 12 m/s. Right after the collision, the small block is moving to the left at 6 m/s. The final velocity of the large block is: A. 2 m/s to the left B. 2 m/s to the right C. 6 m/s to the left D. 6 m/s to the right E. 7 m/s to the right 2. A very hard rubber ball (m = 0.5 kg) is falling vertically at 6 m/s just before it hits the floor. The ball bounces back at essentially the same speed. If the collision with the floor lasts 0.05 s, what is the average force exerted by the floor on the ball? A. 60 N B. 120 N C. 180 N D. 240 N E. 360 N 3. Two objects have different masses but the same momenta. If you stop them with the same retarding force, which one will stop in the shorter distance? A. the heavier one
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211 (S07) Exam #3 - MC - Multiple Choice10Questions Please...

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