A ice hockey puck slides due east toward an identical stationary puck on frictionless ice

PHYSICS · Subjective · CBSE · Physics · Work, Energy and Power · Work, Energy and Power

Problem

A 0.17 kg0.17\,\text{kg} ice hockey puck slides 4.5 m ⁣⋅ ⁣s−14.5\,\text{m}\!\cdot\!\text{s}^{-1} due east toward an identical stationary puck on frictionless ice. They collide elastically and separate. After the collision, the incident puck travels 60∘60^{\circ} south of east. Determine the speed of each puck immediately after the collision.

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