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

PhysicsW.E.P.MiscellaneousMedium2 minPYQ_2024

PhysicsMediumsingle choice

An object falls from a height of 10 m above the ground. After striking the ground it loses $50%$ of its kinetic energy. The height upto which the object can rebounce from the ground is:NEET 2024 (Re-NEET)

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Solution:

K.E. just before striking the ground $K_{1} = m g h_{1} = m g (10)$ K.E. just after striking the ground $= K_{1} - \frac{50}{100} K_{1} = \frac{50}{100} K_{1} = \frac{K _{1}}{2} = K_{2}$ Now, $K_{2} = m g h_{2}$ $\Rightarrow \frac{K _{1}}{2} = m g h_{2}$ $\Rightarrow \frac{m g ( 10 )}{2} = m g h_{2} \Rightarrow h_{2} = 5 m$

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

⏱ 2mℹ️ Source: PYQ_2024

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