Two ice skaters, Daniel (mass 65.0 kg ) and Rebecca (mass 45.0 kg ), are practicing. Daniel stops to tie his shoelace and, while at rest, is struck by Rebecca, who is moving at 14.0 m/s before she collides with him. After the collision, Rebecca has a velocity of magnitude 6.00 m/s at an angle of 53.1∘ from her initial direction. Both skaters move on the frictionless, horizontal surface of the rink  What is the magnitude of Daniel's velocity after the collision?

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