Cart A of mass moves at toward a stationary cart B of mass on a frictionless linear track

PHYSICS · Single correct · CBSE · Physics · Work, Energy and Power · Work, Energy and Power

Problem

Cart A of mass 0.50 kg0.50\,\text{kg} moves at 4.0 m/s4.0\,\text{m/s} toward a stationary cart B of mass 1.0 kg1.0\,\text{kg} on a frictionless linear track. The carts couple together after impact. What fraction of the system’s initial kinetic energy is converted to forms other than mechanical energy? (a) 00 (b) 12\dfrac{1}{2} (c) 23\dfrac{2}{3} (d) 34\dfrac{3}{4}

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