A particle is projected at 60° to horizontal with a kinetic energy K. kinetic energy at the highest point is
A particle is projected at 60° to horizontal with a kinetic energy K. kinetic energy at the highest point is
(a) K
(b) Zero
(c) K/4
(d) K/2
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Correct option (c) K/4
Explanation :
Kinetic energy at highest point,
(KE)H = 1/2 mv2 cos2 θ
= K cos2 θ = K(cos 60°)2 = K/4
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