Question

what is work to be done to increase the velocity of a car from 28.8 km per hour to 57.6 Km per hour if the mass of the car is hundred and 1500kg

Answer 1

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Answer 2

Work = Change in kinetic energy 
= 0.5 m (v² - u²)
= 0.5 × 1500 kg × [(60 × 5/18 m/s)² - (30 × 5/18 m/s)²]
= 156250 joules
= 156.25 kJ

Work done is 156.25 kJ