The driver of an 800.0 kg car decides to double the speed from 25.0 m/s to 50.0 m/s. What effect would this have on the amount of work required to stop the car, that is, on the kinetic energy of the car?

2 answers

KE grows by a factor of 4.
The driver of a 850.0 kg car decides to double the speed from 23.2 m/s to 46.4 m/s. What effect would this have on the amount of work required to stop the car, that is, on the kinetic energy of the car?