Charlize G.

asked • 14d

Calculate the initial and final kinetic energy of the car in the example below.

A car of mass 12100kg is travelling at 15m/s. The driver sees that the traffic light ahead has changed to red and applies the brakes, bringing the car to a stop.


A) Calculate the initial and final energy of the car

B) State the change in kinetic energy as the car comes to a stop

C) The change in kinetic energy is equal to the work done by the brakes in stopping the car. State the work done by the brakes in stopping the car.

D) Given that a force of 18150N was supplied by the brakes of the car, calculate the distance over which the car slowed to a stop.

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