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211 (S07) Exam #2 - MC

# 211 (S07) Exam #2 - MC - Multiple Choice10Questions Please...

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A B C Multiple Choice –  10 Questions                   x 2pts =                  Please write your answers in the space provided. # correct score 1. If you stand on a spring scale in your bathroom at home, it reads 600 N, which means your mass is 60 kg. If instead you stand on the scale while moving up and slowing down with acceleration 2 m/s 2 downward in an elevator, how many newtons would it read? A. 1200 N B. 720 N C. 600 N D. 480 N E. 120 N 2. A 400 kg car moving  at 30 m/s  breaks to a stop in 100 meters.  The average   frictional force (in Newtons) acting on the car is: A. 120 B. 400 C. 1200 D. 1800 E. 12000 3. If a 60-kg sprinter can accelerate from a standing start to a speed of 10 m/s in 2 s, what average power is generated? 4. A trapeze artist of mass 90 kg hangs onto a trapeze bar and swings as shown. As he passes through point B , the force he exerts on the trapeze bar is: A. less than 900 N B. equal to 900 N C. greater than 900 N 5.

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211 (S07) Exam #2 - MC - Multiple Choice10Questions Please...

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