Questions
A car of mass ‘m’ is driven with acceleration ‘a’ along a straight level road against a constant external resistive force ‘R’. When the velocity of the car is ‘V’, the rate at which the engine of the car is doing work will be
detailed solution
Correct option is C
Force required to move with constant velocity ∴ Power = FVForce is required to oppose the resistive force R and also to accelerate the body of mass with acceleration a.∴ Power = (R+ma)VTalk to our academic expert!
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