Asked by ulubi4real

A motor car moves with a velocity of 20m/s on a rough horizontal road and covers a displament of 50m. find the coefficient of dynamic friction between the type and the ground (g = 10m/s)
Answered by R_scott
not enough information
Answered by bobpursley
vf^2=vi^2+ 2ad=20^2 + 2*a *50
but a= -mu*mg/m=mu*g
0^2=400-2*mu*g*50
solve for mu.