A hockey puck slides east across the ice at while a magnetic force acts on it due north

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

Problem

0.16\,\text{kg}

hockey puck slides east across the ice at

12\,\text{m\,s}^{-1}

while a

0.25\,\text{N}

magnetic force acts on it due north. What is the instantaneous power done on the puck by this magnetic force? Provide a brief justification.