physics
posted by sarah .
an experimental rocket plane lands on skids on a dry lake bed. it is traveling at 80.0 m/s when it touches down, how far does it slide before it comes to a stop? assume the coeffcient of kinetic friction between the skids and the lake is .600

initial K.E. = work done against friction
(1/2)M Vo^2 = M*g*U*X
U is the friction coefficient (0.600) Vo is the initial velocity
Mass M cancels out.
Solve for X
X = Vo^2/(2*g*U)
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