How Does a Hockey Stick Affect Puck Velocity and Direction?

[joemama69]

Homework Statement

Note the picture...

An ice hockey puck with a mass at 0.20 kg has a velocity of 12 m/s before being struck by the hockey stick. After the impact the puck moves in the new direction shown with a velocity of18 m/s. If the stick is in contact with the puck for 40 ms, compute the magnitude of the average force F exerted by the stick on the puck during contact, and find the angle θ made by F with the x-direction.

Homework Equations

The Attempt at a Solution

Can someone let me know if this was done correctly

F_xt = mv_x --> F_x(.04) = .2(-18cos20-12)...F_x = -144.57 N

F_yt = mv_y--> F_y(.04) = .2(-18sin20-0)...F_y = -30.78 N

F = (F_x² + F_y²)^1/2 = 147.81 N

Q = arctan F_y/F_x) = 12.02 degrees

 

[Redbelly98]

Looks good.