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Physical Science

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A 40-kg skater moving at 4 m/s overtakes a 60-kg skater moving at 2 m/s in the same direction and collides with her. The two skaters stick together. What is their final speed?

  • Physical Science -

    conservation of momentum
    40*4+60*2= (100)V solve for V

  • Physical Science -

    So the answer is 100V

  • Physical Science -

    No. divide each side by 100

    (160+120)/100 = V

    You have to calculate that.

  • Physical Science -

    Thank you!!

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