A hockey player skates across a pond with constant velocity v and hits a puck straight ahead toward the goal. We can assume there is no friction.
After the puck is hit, what is the velocity of the center of mass of the hockey player-puck system?

gas and liquid

a is the best answer your welcome

see the picture for the vector

the magnitude of the vector by pythagorean theorem

r = √( (-10)^2 + (3)^2 ) = √109

magnitude = √109 units

the direction angle between vector and x-axis is

tan^(-1)(3/10) = 16.699

so the direction is approximately 16.7 degrees north of west