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Conservation of Mechanical Energy

Problem #: 3 | Variant #: 3

A 1408 kg vehicle is speeding along a twisting road. Coming around a corner the driver spots an accident across the road ahead. He, hits the brakes, but still collides at 39.13 km/h. Without speeding (speed limit = 55 km/h) and under the same braking conditions he would have stopped just before hitting. How much faster than the speed limit was the car traveling?


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