What is the work done to increase the velocity of a car from 30km/h to 60km/h if the mass of the car is 1500kg?

Work done to increase the velocity of a car = Change in kinetic energy

m = 1500kg

u = 30km/h = 30*(5/18) m/s= 25/3 m/s

v = 60km/h = 60*(5/18) m/s = 50/3 m/s

Plug-in these values in above equations, we get

W = (0.5)(1500)(625/9)(4-1) = 156250 J = 156.25 KJ

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