a student with a mass of 80 kg runs up three flights of stairs in 12.0 seconds the student has gone a vertical distance of 8.0 m. determine the amount of work done by the student to elevate his body to this height. assume that he speed is constant.
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if the speed of the student is constant the acceleration will be zero ,since acceleration will be zero then force will be zero.
w=0*8=0
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