Homework Help: Physics

Posted by John on Thursday, October 14, 2010 at 11:45pm.

A box is given a push so that it slides across the floor. How far will it go, given that the coefficient of kinetic friction is 0.24 and the push imparts an initial speed of 3.8 m/s?

Physics - drwls, Friday, October 15, 2010 at 1:38am
u_k = 0.24
Vo = 3.8

It will travel a distance X such that
Friction work = initial kinetic energy

F(friction)*X = u_k*M*g*X = (1/2)M Vo^2
Mass M cancels out.

X = Vo^2/(2*u_k*g)= 3.1 meters

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