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Two ice skaters, Daniel (mass 65 kg) and Rebecca (mass 45 kg), are practicing.


Two ice skaters, Daniel (mass 65 kg) and Rebecca (mass 45 kg), are practicing. Daniel is initially at rest when struck by Rebecca moving at 13 m/s. After the collision, Rebecca has a velocity of 8 m/s at an angle of 53.10 from her initial direction. 

a) What are the magnitude and direction of Daniel's velocity after the collision? 

b) What is the change in kinetic energy of the two skaters as a result of the collision?



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Answer #1

The question 10 is solved in the attached image.

(Note-change in kinetic energy is the energy lost after collision,energy loss can be represented by negative symbol i.e -682.38 j is the change in kinetic energy)

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