Friction Force and Distance Traveled

[Trenier]

Homework Statement

At a local hockey rink, a puck with a mass of .12kg is given an initial speed of 5.3m/s. If the coefficient of friction is .11, what distance does the puck slide before coming to rest?

Homework Equations

F(net)=ma, F(friction)=Coeff. x F(normal)

The Attempt at a Solution

I don't know where to start.. You can't find the acceleration because we don't know the time or distance, so how do you get the net force? If i could get the acceleration i could get the net force and then the distance. I am so lost..

 

[PhanthomJay]

Trenier, welcome to PF!
Use your first equation to solve for the acceleration. You know m, and you should be able to identify F_net. What forces act on the puck?

 

[Trenier]

You can't use the first equation becuase you don't know the acceleration. Forces acting on the puck are the Force of the stick giving it the velocity, the normal force, the friction force and the weight.

 

[PhanthomJay]

You can't use the first equation becuase you don't know the acceleration.

but you know the mass and you should know the net force acting on it in the horizontal direction.

Forces acting on the puck are the Force of the stick giving it the velocity,

yes, but this force disappears when the puck reaches its initial velocity and the stick loses contact with it

the normal force, the friction force and the weight.

yes, use these to calculate F_net.