Asked by Anonymous

Joanne drives her car with a mass of 1000 kg at a speed of 18m/s .Find a road friction force that is need to bring her car to a halt in 12s
Answered by Damon
F = change in momentum/change in time
F = (0 - 18,000) / 12
F = - 1500 Newtons

Answered by Zoey
1400 N
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