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P5 An iron sphere is thrown straight up from a height of 2 m with a velocity of 0.3 m/s. It falls back to ground and bounces. After the bounce, it momentarily comes to a stop at a height of 1.9 m, where it is caught. (a) What is the speed of the ball when it first reaches the ground? b) What is its speed when it just leaves the ground after the bounce? (c) Neglecting the time of the bounce, what is the total time elapsed from when the ball is thrown until it is caught?

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