Asked by wallacenjovu
A roller coaster car of mass 400kg starts from rest at point A and passes the point B with a speed of 3m/s.if the distance from A to B along the tracks is 20m,how large is the average friction force retarding the motion of the car
Answers
Answered by
bobpursley
if it is a horizontal track
vf^2=vi^2+2ad remembering a=Forcefriction/mass
vf^2=vi^2+2ad remembering a=Forcefriction/mass
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