Physics, asked by kirat3801, 9 months ago

A particle is projected with speed 20 m/s at an angle 30°with horizontal. after how much time will the angle between velocity and acceleration be 90°?

Answers

Answered by Lokesh08

0

AT THE HIGHEST POINT VELOCITY WILL BE PARALLEL AND ACCELERATION IS DOWNWARDS SO PERPENDICULAR.

time of ascent=usinetheta/g

20*1/2/10=1second

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