Question

During practice, a hockey player passes the puck to his coach who is 6.5 m away as shown in the figure below.

The puck, which has a mass of 0.198 kg, was initially at rest. The hockey player exerts a constant 46.9-N force as his stick pushes the puck 0.17 m. Include only the puck in the system and assume the friction between the ice and the puck is negligible.

(a) Draw a free-body diagram for the puck while it is in contact with the player's stick.

(b) Find the work done by all the forces in your free-body diagram.

Wgravity	=  J
Wnormal	=  J
Wstick	=  J

(c) What is the speed of the puck as it leaves the player's stick?
m/s

(d) In an all-star hockey game, the puck reaches speeds of 100 mph. Use that information to check your results to parts (a) through (c)

Answer 1