how much work must be done to stop a 1000 kg car travelling at 100 km/

1.	how much work must be done to stop a 1000 kg car travelling at 100 km/h
Answer» 500/18 as to change speed in si units... Work done = kinetic energy.....i.e 1/2m.v.v=1/2×1000kg×[500/18]^2=385802.5(approx.) sorry bt your ans is wrong 10

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