A cricket ball is hit so that it leaves the bat with a speed of at an angle of to the…

PHYSICS · Subjective · A Level · Physics · Mechanics and materials · Mechanics and materials

Problem

A cricket ball is hit so that it leaves the bat with a speed of

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

at an angle of

45^\circ

to the horizontal. Take

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

. (i) Determine the maximum height

H

reached by the ball. (ii) Find the time after launch at which the ball is at a height

H/2

during its upward motion.