The power delivered by the student's biceps will be 51.45W.
What is Power?
This is defined as the amount of energy converted per unit and the SI unit is Watts.
Power = Energy/time
Force = ma = 42 kg × 9.8m/s² = 411.6N.
Energy = Force × distance
= 411.6N × 0.25m = 102.9J
Power = 102.9J/2s = 51.45W
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