Question

Change in a vehicle's kinetic energy is equal to work done by the force acting at the brakes of the car. True or False?

• A. True
• B. False

Answer 1

The correct option is A True

Vehicles brakes apply a force, so the vehicle comes to rest.

The change in kinetic energy is equal to the work done and considering the law of conservation of energy, the work done in changing the KE must be equal to work done by the force acting at the brakes.