Asked by Jeena

During a road test,a driver brakes a 1420kg car moving at 64.8km/h [W]. The car slows down and comes to a stop after moving 729m [W]. What is the net force acting on the car?
Answered by bobpursley
vf^2=vi^2+2ad but a=forcenet/mass

change vi to m/s, solve for forcenet.
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