A hockey puck is initially at rest on frictionless ice

PHYSICS · Single correct · CBSE · Physics · Force and Laws of Motion · Force and Laws of Motion

Problem

A 0.20 kg0.20\,\text{kg} hockey puck is initially at rest on frictionless ice. It is struck by a stick so that the net horizontal force rises linearly from zero to a peak value FpeakF_{\text{peak}} in 5.0×10−2 s5.0\times10^{-2}\,\text{s} and then falls linearly back to zero in the next 5.0×10−2 s5.0\times10^{-2}\,\text{s}. Immediately after the force pulse ends, the puck slides at 3.0 m s−13.0\,\text{m}\,\text{s}^{-1}. What is FpeakF_{\text{peak}}? (a) 30 N30\,\text{N} (b) 12 N12\,\text{N} (c) 6.0 N6.0\,\text{N} (d) 24 N24\,\text{N}

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