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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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Observations show that interstellar clouds can have almost any shape and
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Aproton is shot from the negative disk toward the positive disk. what launch speed must the proton have to just barely reach the positive disk?
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What is the amount of work done when JoAnne throws a baseball 2 meters at a force of 40
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