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Problem
Problem
A body is projected at an angle
60
∘
60^\circ
6
0
∘
with the horizontal with kinetic energy
K
K
K
. When the velocity makes an angle
30
∘
30^\circ
3
0
∘
with the horizontal, the kinetic energy of the body will be a.
K
/
2
K/2
K
/2
b.
K
/
3
K/3
K
/3
c.
2
K
/
3
2K/3
2
K
/3
d.
3
K
/
4
3K/4
3
K
/4
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