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A 2000 kg car at speed of 70 miles an hour comes to a stop within...

A 2000 kg car at speed of 70 miles an hour comes to a stop within 5 seconds.

              a) Calculate the amount energy that will be wasted in this vehicle stop.

                        b) If the energy of stopping can be captured in an energy storage system, and used to drive the car again how far the car can go with this stored energy, assume the car is consuming 200Wh/mile.

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