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2. You stand on top of a 100 meter tall building with your arm held out over the edge. You throw a ball straight

2. You stand on top of a 100 meter tall building with your arm held out over the edge. You throw a ball straight up in the air at 5 m/s. a) Sketch a graph of the y-position of the ball as a function of time. b) How long will it take for the ball to reach the ground? c) What will the impact velocity of the ball be?

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