At time , a small ball is projected from point with a velocity of at an angle of with…

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

Problem

At time

t=0

, a small ball is projected from point

A

with a velocity of

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

at an angle of

60^\circ

with the horizontal. Neglect air resistance and determine the two times

t_1

and

t_2

when the velocity of the ball makes an angle of

45^\circ

with the horizontal

x

-axis.