Physics, 13.04.2022 22:20 nananananananan03
At the gym, a man pulls a bar on a machine that works the muscles of the upper back. It takes him 0. 5 seconds to raise 30
kilograms of weights a vertical distance of 0. 5 meters.
Which of these exerts the same power output? (Estimate g as 10 m/s2. )
A) lifting 25 kilograms a distance of 2. 4 meters in 2. 0 seconds
B) lifting 45 kilograms a distance of 2. 4 meters in 3. 0 seconds
C) leg pressing 45 kilograms a distance of 0. 5 meters in 0. 5 seconds.
D) bench pressing 30 ligrograms a distance of 0. 5 meter in 1. 5 seconds.
Pleas help me
Answers: 1
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At the gym, a man pulls a bar on a machine that works the muscles of the upper back. It takes him 0....
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