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NEET · Physics · STD 11 - 5. work,energy,power and collision
A body initially at rest, breaks up into two pieces of masses \(2 M\) and \(3 M\) respectively, together having a total kinetic energy \(E\). The piece of mass \(2 M\), after breaking up, has a kinetic energy
- A \(\frac{E}{2}\)
- B \(\frac{E}{5}\)
- C \(\frac{{3E}}{5}\)
- D \(\frac{{2E}}{5}\)
Answer & Solution
Correct Answer
(C) \(\frac{{3E}}{5}\)
Step-by-step Solution
Detailed explanation
From the law of conservation momentum, \(p_{1}=p_{2}\) Kinetic energy, \(E=\frac{p^{2}}{2 m}\)
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