A 1225 kg automobile starts from rest on a horizontal road and gains a speed of 83 km/h in 38 s.
(a) What is the kinetic energy of the auto at the end of the 38 s?
J
(b) What is the average power required of the car during the 38 s interval?
W
(c) What is the instantaneous power at the end of the 38 s interval, assuming that the acceleration was constant?
W