what is the work done to increase the velocity of a car from 30km/hr to 60km/hr. if the mass of the car is 1500kg.
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Initial velocity u=30 km/h=30×185=325 m/s
Final velocity v=60 km/h=60×185=350 m/s
Mass m=1500 kg
Work done W=21mv2−21mu2
⟹ W=2m(v2−u2)=21500×((350)2−(325)2)=156187 J
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