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1. Find the momentum of a body of mass 100 g having a kinetic energy of 20 J. |
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Answer» m= 100g= 1/10 KG, K.E= 20J SINCE, K.E.= 1/2 mv², Therefore, 20 = 1/2 × 1/10 × v² or v²= 400 or v= 20 m/s MOMENTUM, P= mv= 1/10 × 20 = 2 kg m/s |
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