A hockey stick hits a hockey puck with an average constant force F = 1280 N. The contact between
the puck and the stick lasts a time Δt = 0.005 s. The puck is on a flat horizontal surface.
a) Consider the ice surface to be completely frictionless. How far (from the stick) is the puck 2 seconds after
being hit?
b) Consider that there is friction between the puck and the ice surface. If the puck stops moving 1.5 s after
being struck by the stick, what is the coefficient of friction between the ice and the puck?

Question

A hockey stick hits a hockey puck with an average constant force F = 1280 N. The contact between 
the puck and the stick lasts a time Δt = 0.005 s. The puck is on a flat horizontal surface. 
a) Consider the ice surface to be completely frictionless. How far (from the stick) is the puck 2 seconds after 
being hit? 
b) Consider that there is friction between the puck and the ice surface. If the puck stops moving 1.5 s after 
being struck by the stick, what is the coefficient of friction between the ice and the puck?

p0sitr0n · Answer

is the mass of the puck given?

anonymous · Answer

No, that's what has me stuck.. If I had the final velocity or mass I know I could get it.. I'm not sure what to do without them.

goformit100 · Answer

For Solving this Question, I would like to ask you that, do you have the detailed conception of : Work and Energy.