A 1400 kg car traveling at 25 m/s slows to a stop at a red light. How much work is done by the brakes? If it takes the car 108.7 meters to stop, what was the braking force?
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Step 1
The initial kinetic energy of the car can be calculated using the formula: KE = 0.5 * m * v^2 where m = 1400 kg (mass of the car) and v = 25 m/s (initial velocity). KE = 0.5 * 1400 * 25^2 KE = 0.5 * 1400 * 625 KE = 437500 J Show more…
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