Give two examples of kinetic energy transfer?

1) When a person throws a ball, kinetic energy is transferred from their arm muscles to the ball. The person's muscles contract and apply a force on the ball, causing it to move and gain kinetic energy.

2) When a car comes to a stop, kinetic energy is transferred from the car to its brake system. As the driver applies the brakes, friction is generated between the brake pads and the rotors, which slows down the car and transfers its kinetic energy to the brake system.