Questions
A 500kg car ,moving with a velocity of on a straight road undirectionally, doubles its velocity in 1min. The average power delivered by the engine for doubling the velocity is
detailed solution
Correct option is D
initial velocity u= 10ms-1 ,final velocity v= 20ms-1Work done = Increase in kinetic energyWork =12mv2-u2= 12x500[202−102] = 500×30×102 Powere = ∆KETimePower = 500×30×102×60 = 1250WTalk to our academic expert!
Similar Questions
A 500-kg car, moving with a velocity of 36 kmh-1 on a straight road unidirectionally, doubles its velocity in 1 min. The average power delivered by the engine for doubling the velocity is
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