Question

A ball whose kinetic energy is E, is projected at an angle of 45° to the horizontal. The kinetic energy of the ball at the highest point of its flight will be

(a) E 

(b) E/√ 2 

(c) E/2 

(d) zero

Answer 1

(c) : Kinetic energy point of projection (E) = 1/2mu²

At highest point velocity = u cosθ