Work, Power and EnergyHard
Question
The energy required to accelerate a car from rest to 10 m/s is W. The energy required to accelerate the car from 10 m/s to 20 m/s :-
Options
A.W
B.2W
C.3W
D.4W
Solution
By work energy theorom
W =
m [(10)2 - 0] = 50 m
again W′ =
m [(20)2 - (10)2] = 150 m = 3W
W =
m [(10)2 - 0] = 50 magain W′ =
m [(20)2 - (10)2] = 150 m = 3WCreate a free account to view solution
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