Consider a 4-kg ball that is in free fall near the surface of the Earth. Suppose...

Question

Question

Consider a 4-kg ball that is in free fall near the surface of the Earth. Suppose that the ball is dropped from a height of 45 m above the ground.
1. (a) What is the net force acting on the ball (i) at the instant the ball is released from this height, and (ii) when it has 15 m remaining to reach the ground?
2. (b) How long does it take for the ball to reach the ground from when it was released?
3. (c) What is (i) the instantaneous speed of the ball immediately before hitting the ground, and (ii) the average speed of the ball in its flight towards the ground?

Answer 1

Answer #1

Answer 2

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