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A juggler performs in a room with a ceiling that is 2.4 m above the level of his hands. He throws a ball (diameter of 10 cm) vertically so that it just reaches the ceiling.

what initial velocity does he throw the ball?

how long does it take for the ball to reach the ceiling?

He throws up a second ball with the same initial velocity at the instant that the first ball is at the ceiling. How long after the second ball is thrown do the two balls pass each other?

When do the balls pass each other, how far are they above the juggler’s hands?

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