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NEET UG PHYSICS MCQ: WORK-ENERGY-POWER

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Application +4 | -1

A cricket ball is hit at

{30^0}

with the horizontal with kinetric energy

{E_k}

. What is the kinetic energy at the highest point?

View answer and explanation

Correct option: B

3{E_k}/4

Option B (

3{E_k}/4

) is correct because the kinetic energy at the highest point is due to the horizontal component of velocity, which is

v \cos(30^\circ)

. Therefore, the kinetic energy at the highest point is

E_k \cos^2(30^\circ) = E_k (\sqrt{3}/2)^2 = 3E_k/4

.

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