Pkg 0.21 7. A car of 1200 kg is travelling at 20 m/s when it slams on the brakes. a. How much kinetic energy does the ca

[answerhappygod]

Pkg 0 21 7 A Car Of 1200 Kg Is Travelling At 20 M S When It Slams On The Brakes A How Much Kinetic Energy Does The Ca 1 (26.94 KiB) Viewed 13 times

Pkg 0.21 7. A car of 1200 kg is travelling at 20 m/s when it slams on the brakes. a. How much kinetic energy does the car have before it hits the brakes? b. Where does this energy go when the driver brakes to a stop? c. What is the work done by the car's brakes? d. If the car brakes over a distance of 50 m before coming to rest, what is the force of friction provided by the brakes on the car? (ans: 4800 N)