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A swimmer moves through the water at an average speed of 0.22 meter per second.The average drag force is 110 N.What average power is required of the swimmer?
AdnanNasir
Since the speed is constant (acceleration is zero), we know the horizontal forces are balanced.
The swimmer's forward force cancels the 110N drag force.
Work done by the swimmer is (110N x .22meter) = 24.2 N-m per second
= 24.2 Joules per second
= 24.2 watts
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