Who has the most power? athlete A (bench presses 100 kg over 0.6 m in 0.5 s) athlete B (bench presses 150 kg over 0.6 m in 1.0 s) athlete C (bench presses 200 kg over 0.6 m in 2.0 s) athlete D (bench presses 250 kg over 0.6 m in 2.5 s)

Athlete A

Explanation:

Power is the rate of doing work and it is calculated as follows:

Power = work done/time taken = mgh/t

(for work being done against gravity)

So for athlete A

P = (100 kg * 9.8 N/kg * 0.6m) / 0.5 s = 1176 W

For athlete B

P = (150 kg * 9.8 N/kg * 0.6m) / 1 s = 882 W

For athlete C

P = (200 kg * 9.8 N/kg * 0.6m) / 2 s = 588 W

For athlete D

P = (250 kg * 9.8 N/kg * 0.6m) / 2.5 s = 588