Mathematics (AS & A Level) · May / June 2018 · Paper 42 · Question 1
9709
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A man has mass 80 kg. He runs along a horizontal road against a constant resistance force of magnitude P N. The total work done by the man in increasing his speed from 4 m s−1 to 5.5 m s−1 while running a distance of 60 metres is 1200 J. Find the value of P. [4]
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