Physics

Physics

Problem

A 0.5 kg0.5\,\text{kg} ball moving at 4 m s−14\,\text{m\,s}^{-1} strikes and sticks to a 1 kg1\,\text{kg} block initially at rest on a frictionless surface. What percentage of the system’s initial kinetic energy is lost in the impact? a) 75%75\% b) 67%67\% c) 33%33\% d) 50%50\%

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