The driver of a 810.0 kg car decides to double the speed from 20.3 m/s to 40.6 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?
KEi = Blank × 105 J
KEf =Blank × 105 J
times as much work must be done to stop the car.
(select)4238
A.4
B.2
C.3
D.8