A ball is projected with velocity at an angle to the horizontal

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

Problem

A ball is projected with velocity

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

at an angle to the horizontal. For maximum range, its velocity at the highest point must be: (1)

10\text{ m s}^{-1}

(2)

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

(3)

18\text{ m s}^{-1}

(4)

16\text{ m s}^{-1}