Question

On a level road scooter applied brakes to slow down from a speed of 10 metre per second to 5 metre per second if the mass of the scooter scooter be 150 kg calculate the work done by the brakes (nikale air resistance and friction)

Answer 1

Answer:

W= -5625J

Explanation:

Work done by brakes = -(change on kinetic)

= - {1/2×150(10²-5²)}

= -5625Joule