A ball is projected vertically upward with a speed of from ground level

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

Problem

2.0\,\text{kg}

ball is projected vertically upward with a speed of

12\,\text{m s}^{-1}

from ground level. At what height from the ground will its speed be

6\,\text{m s}^{-1}

? (Take

g = 9.8\,\text{m s}^{-2}

) (a)

9.2\,\text{m}

(b)

3.7\,\text{m}

(c)

5.5\,\text{m}

(d)

11\,\text{m}