Question

A ball is projected from the ground with velocity `u` such that its range is maximum Then
A. Its velocity at half the maximum height is `sqrt3/2u`
B. Its velocity at the maximum height is `u`
C. Change in its velocity when it returns to the ground is `u`
D. all the above are true

Answer 1

Correct Answer - A
At half of max height
velocity `(V)=usqrt((1+cos^(2)theta)/(2))`