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Newton's Laws for System of Particles

A wagon of ...

Question

A wagon of $20$ metric ton moves with $10 m / s$ and collides perfectly inelastically with stationary wagon of $60$ metric ton.Find loss of kinetic energy.

A

250 k J

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B

750 k J

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C

500 k J

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D

650 k J

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Solution

The correct options are
A $250 k J$
B $750 k J$

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