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Two ice skaters, Daniel ( mass 7 0 . 0 kg ) and Rebecca ( mass 4 5 . 0 kg ) , are practicing.
Two ice skaters, Daniel mass kg and Rebecca mass kgare practicing. Daniel stops to tie his shoelace and, while at rest, is struck by Rebecca, who is moving at ms before she collides with him. After the collision, Rebecca has a velocity of magnitude ms at an angle of from her initial direction. Both skaters move on the frictionless, horizontal surface of the rink. What is the change in total kinetic energy of the two skaters as a result of the collision?
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