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You throw a ball straight up into the air at 18 m/s from a height of 32 m above the ground. The weight of ball

You throw a ball straight up into the air at 18 m/s from a height of 32 m above the ground. The weight of ball is 35g.

(a) Calculate the time the ball takes to hit the ground.

(b) Calculate the velocity of the ball when it hits the ground.

(d) Explain why you cannot use half the time for (a) to answer (c).

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