With a and b? i don't understand how to do it
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Physics, 21.06.2019 21:40
Avery hard rubber ball (m = 0.5 kg) is falling vertically at 4 m/s just before it bounces on the floor. the ball rebounds 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?
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Physics, 22.06.2019 04:20
The free body diagram shows a box being pulled to the left up a 25-degree incline. the magnitude of the normal force is
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