What is Friction? Friction is everywhere. It's the force of gravity pulling an object down towards the ground causing it to decrease in momentum. Friction also depends on an opposing contact force pushes the two surfaces together. Friction happens when the surface isn't completely smooth. The rougher the surface, the more friction it holds.
For example, a hockey player can't go forever due to friction. The friction between the skate and the ice will always bring them to a stop at one point. The ice creates drag on the skate causes it to decrease in motion.
In hockey the puck will slide across the ice better if the ice is smoother because there's less drag compared to if the ice was rough. The more force applied from the hockey stick to the puck, the farther the puck will travel across the ice due to the amount of friction.
During a NHL hockey game the pucks initial speed is 10 m/s , before coming to a stop it slides 70 meters. What is the friction between the puck and the ice? 700
A hockey puck starts at 4.9m/s and the ice is 0.05 the friction of the puck goes = 25 m