﻿ A body is projected with kinetic energy 100J at an angle 45° with horizontal. What fraction of kinetic energy will be the potential energy at the highest point? from Physics Motion in A Plane Class 11 Manipur Board

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A body is projected with kinetic energy 100J at an angle 45° with horizontal. What fraction of kinetic energy will be the potential energy at the highest point?

If a body is projected with kinetic energy K at angle θ, then kinetic energy at highest point is K cos2θ.

Therefore, potential energy of the body at highest point is,

P.E. =

Fractional potential energy at highest point is,

Here, we have

K = 100 J and
Fractional potential energy at highest point is,

At the highest point, K.E will be 0.5 times the P.E at the highest point.
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