A stone is projected so that its maximum height above the point of projection is

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

Problem

5\,\text{m}

. The initial angle of projection is

30^{\circ}

and

g

may be taken as

10\,\text{m\,s}^{-2}

. The initial speed of projection is (a)

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

(b)

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

(c)

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

(d)

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