In: Physics
An object of mass m with a certian initial speed on a horizontal surface comes to rest after traveling a distance of 15m. If the coefficient of friction is .25, what is the initial speed of the object? Use g= 10m/s^2
Given Data
s=15m
=0.25
The total kinetic energy converted into frictional force
(1/2)mv^2=mgs
v^2=2gs
=2*10*0.25*15
=75
v =8.66 m/s^2