A bullet is fired from a rifle. If rifle recoils freely, then kinetic energy of rifle is

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5.Work, Energy, Power and Collision

medium

A bullet is fired from a rifle. If the rifle recoils freely, then the kinetic energy of the rifle is

Less than that of the bullet

More than that of the bullet

Same as that of the bullet

Equal or less than that of the bullet

(AIIMS-1998)

Solution

(a)$E = \frac{{{P^2}}}{{2m}}.$If $P =$ constant then $E \propto \frac{1}{m}$
i.e. kinetic energy of heavier body will be less. As the mass of gun is more than bullet therefore it possess less kinetic energy.

Standard 11

Physics

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medium

A bullet is fired from a rifle. If the rifle recoils freely, then the kinetic energy of the rifle is

Solution

Similar Questions

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