Question

What amount of work is to be required to stop a car of 100 kg moving with a velocity of 40 km per hour? (And pls show the working

Answer 1

Answer:

Explanation:

Mass of car, m = 1500 kg

velocity, v = 60 km/h =  

Kinetic energy possessed by the car =  mv²  

⇒ KE =  

To stop the car, we have to make the KE of car 0. So the work need to be done is 204.4 kJ.

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