Question

Abody is Projected at an angle of 60 degree with the horizontal with Kinetic energy K. When the velocity makes an angle 30 degree with the horizontal, the Kinetic energy of the body is
(1) K/2
( 2) K/3
( 3 ) 2 k / 3
(4) 3 K / 4
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Answer 1

Answer:

please mark

Explanation:

A body is projected at an angle 60∘ with horizontal with kinetic energy K. When the velocity makes an angle 30∘ with the horizontal, the kinetic energy of the body will be. Velocity has become 1√3 times. Therefore, kinetic energy will become 1/3 times.

Answer 2

Answer:

a body is projected at an angle 60 kinetic energy (k) with horizontal