Question

During the ascent phase of a rep of the bench press, the lifter
exerts an average vertical force against a 5000-gram barbell
while the barbell moves 0.8 m upward. How much work did
the lifter do to the barbell? Express your answer in kilo Joules
(kJ) Assuming the acceleration due to gravity (g) to 10 m/s2​

Answer 1

Explanation:

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