Your are standing with your 1,212-kg car at a red light. The light turns green, and...
Your are standing with your 1,212-kg car at a red light. The light turns green, and you speed up your car to 59 mph. Then you continue at a constant speed. After another mile, what is the total work done on your car from the moment you started from rest? My answer was 15998 J but it turned out to be incorrect i dont know why. Any help would be appreciated.
Homework Answers
m = mass of car = 1212 kg
Vi = initial speed = 0 m/s
Vf = final speed = 59 mph = 26.4 m/s
work done = change in KE = (0.5) m (Vf2 - Vi2) = (0.5) (1212) (26.42 - 02)
W = 422357.8 J
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