8. A hockey puck (1) of mass 140 g is shot east at a speed of 7.00 m/s. It strikes a second puck (2), initially at rest, of mass 133 g. As a result of the collision, the first puck (1) is deflected at an angle of 60° south of east and the second puck (2) moves at an angle of 48° north of east. What is the magnitude of the velocity of puck (1) after the collision? m/s

8. A hockey puck (1) of mass 140 g is shot east at a speed of 7.00 m/s. It strikes a second puck (2), initially at rest, of mass 133 g. As a result of the collision, the first puck (1) is deflected at an angle of 60° south of east and the second puck (2) moves at an angle of 48° north of east. What is the magnitude of the velocity of puck (1) after the collision? m/s