Question 17:

Calculate the work required to be done to stop a car of 1500 kg moving at a velocity of 60 km/h?

Answer:

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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