A ball is at a height of above the ground and is moving at

PHYSICS · Single correct · A Level · Physics · Mechanics and materials · Mechanics and materials

Problem

A

0.5\,\text{kg}

ball is at a height of

8\,\text{m}

above the ground and is moving at

4\,\text{m/s}

. Ignoring air resistance, find its speed when it reaches a height of

3\,\text{m}

. Take

g = 10\,\text{m/s}^2

. (a)

10\,\text{m/s}

(b)

11\,\text{m/s}

(c)

13.3\,\text{m/s}

(d)

12\,\text{m/s}

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