The 800 Wm athlete draws the bowstring. What work does it do in 0.5 seconds?
| August 7, 2021 | education
N = 800 W.
t = 0.5 s.
A -?
Power N is called a scalar physical quantity that shows how quickly mechanical work A. Power N is determined by the formula: N = A / t, where A is the performed mechanical work, t is the time of work.
A = N * t.
A = 800 W * 0.5 s = 400 J.
Answer: the athlete, when pulling the bowstring of the bow, performs work A = 400 J.
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