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Question
Calculate the work required to be done to stop a car of 1500 kg moving at a velocity of 60 km/h?
Calculate the work required to be done to stop a car of 1500 kg moving at a velocity of 60 km/h?
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Solution
Kinetic energy, 
Where,
Mass of car, m = 1500 kg
Velocity of car, v = 60 km/h 
Hence, 20.8 × 104 J of work is required to stop the car.
Kinetic energy,
Where,
Mass of car, m = 1500 kg
Velocity of car, v = 60 km/h
Hence, 20.8 × 104 J of work is required to stop the car.
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