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5 November, 04:29

The driver of a 1,000 kg car travelling at a speed of 16.7 m/s applies the car's brakes when he sees a red light. the car's brakes provide a frictional force of 8,000 n. determine the stopping distance of the car.

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  1. 5 November, 04:33
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    Energy conservation:

    kinetic energy Ek = braking work W

    mV^2 = 2Fb*x

    x = mV^2/2Fb = 1000*16.7^2/16.000 = 17.43 meters
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