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Two ice skaters, Daniel (mass 69.2 kg) and Rebecca (mass 50.1 kg) are practicing. Daniel stops...

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Physics

Two ice skaters, Daniel (mass 69.2 kg) and Rebecca (mass 50.1kg) are practicing. Daniel stops to tie his shoelace and, while atrest, is struck by Rebecca, who is moving at12.7 m/s before shecollides with him. After the collision, Rebecca has a velocity ofmagnitude 6.8 m/s at an angle of 50.1° from her initial direction.Both skaters move on the frictionless, horizontal surface of therink.

(a) What are the magnitude and direction of Daniel's velocityafter the collision?
m/s

(b) What is the change in total kinetic energy of the two skatersas a result of the collision?

Answer & Explanation Solved by verified expert
4.2 Ratings (861 Votes)
a initial velocity of Daniel 0 initial velocity of Rebecca 127 ms i finally velocity of Rebecca vR 68cos501 i sin501 j    See Answer
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