A bullet is fired from a rifle. If rifle recoils freely, then K.E. of the rifle is:
A
less than that of the bullet
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B
more than that of the bullet
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C
same as that of the bullet
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D
equal or less than that of the bullet
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Solution
The correct option is A less than that of the bullet Here both the gun and bullet have same momentum. As the mass of the gun is larger, so the kinetic energy of the gun is less than that of bullet.