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A particle is projected at 60° to horizontal with a kinetic energy K. kinetic energy at the highest point is

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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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1 Answer

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Best answer

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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