Mathematics (AS & A Level) · Oct / Nov 2018 · Paper 41 · Question 3
9709
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A van of mass 2500 kg descends a hill of length 0.4 km inclined at 4Å to the horizontal. There is a constant resistance to motion of 600 N and the speed of the van increases from 20 m s−1 to 30 m s−1 as it descends the hill. Find the work done by the van’s engine as it descends the hill. [5]
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