what is the work that must be done to stop a car of mass 4000 kg moving with a velocity of 54 kilometre per hour in 2 second
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450kj .find acc from 1st law and then find force
put the value if force and velocity in the formula of work .then u will get work is equal to 450kj
put the value if force and velocity in the formula of work .then u will get work is equal to 450kj
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