A car starting from rest at the top of a hill at point A and coasting with friction to the botton point C and up the hill on the other side point B.Assuming the height of the hill is 100m,calculate the velocity of the car at the botton of the hill.
P.E =K.E at C mgh=1/2mv gh=1/2v 10×100=1/2×v 1000=v\2 1000×2=v
2000=v square root=44.7ms-1