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You are on a bridge which is a height 30m above the water. You first drop a ball and then 1.5 seconds later throw a second ball down so that both balls hit the water at the same time. (assume the positive y-direction is up) Part A At what time after you release the first ball does it hit the water? Part B With what velocity must the second ball be thrown downwards? Part C What is the speed of the first ball just before it hits the water? Part D What is the velocity of the second ball just before it hits the water?

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