A plastic bullet of 2 g from a rifle is fired to a brick wall.
It strikes the wall with 20 m/s and returns at 18 m/s. If the
contact time of the ball with the wall is 3 ms, what is the
bullet's average acceleration?
A plastic bullet of 2 g from a rifle is fired to a brick wall. It strikes the wall with 20 m/s and returns at 18 m/s. If
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