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Physics - W.E.P. Question with Solution | TestHub

PhysicsW.E.P.MiscellaneousMedium2 minPYQ_2008

PhysicsMediumsingle choice

A bullet is fired from a rifle and the rifle recoils. Kinetic energy of rifle is

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Answer:

Solution:

Momentum of rifle $=$ Momentum of bullet $m_{1} v_{1} = m_{2} v_{2}$ , Also $m_{1} > m_{2}$ $\frac{K.E. of rifle}{K.E. of bullet} = \frac{\frac{1}{2} m _{1} v _{1}^{2}}{\frac{1}{2} m _{2} v _{2}^{2}} = \frac{m _{1}^{2} v _{1}^{2}}{m _{1}} \cdot \frac{m _{2}}{m _{2}^{2} v _{2}^{2}} = \frac{m _{2}}{m _{1}}$ K.E. of rifle is less than K.E. of bullet.

Stream:AIIMSSubject:PhysicsTopic:W.E.P.Subtopic:Miscellaneous

⏱ 2mℹ️ Source: PYQ_2008

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