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A3 solutions: Power

1. A 1000kg car with an 80kW engine travels at a constant speed of 20ms-1. Calculate the instantaneous acceleration of the car if the driver suddenly took her foot off the accelerator pedal.Hint:Solution: 2. Calculate the power of a 1000kg car driving up a 1in4 hill at a speed of 10ms-1 if the air resistance acting against the car is 1000N.Hint:Solution:

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