14. An ice pick of mass 7.5 kg moving with a speed of 18 m/s to the right collides with a 2.5 kg piece of ice moving with a speed of 4.2 m/s to the right. The collision is elastic, and the ice moves to the right with a speed of 24.9 m/s after the collision. What is the speed and direction of the ice pick after the collision?