0 = v - a t
t = 64 / (v/2) = 128/v
v = a (128/v)
v^2 = 128 a
F = m a
F = .55 m g
so a = .55 g
v^2 = 128 * .55 g= 128 * .55 * 9.81
A 1500 kg car skids to a halt on a wet road where μk = 0.55.How fast was the car traveling if it leaves 64-m-long skid marks?
1 answer