Mathematics (AS & A Level) · May / June 2018 · Paper 42 · Question 2
9709
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A train of mass 240 000 kg travels up a slope inclined at an angle of 4Å to the horizontal. There is a constant resistance of magnitude 18 000 N acting on the train. At an instant when the speed of the train is 15 m s−1 its deceleration is 0.2 m s−2. Find the power of the engine of the train. [4]
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