Asked by mathew
Two ice skaters stand facing each other at rest on a frozen pond. They push off against one another and the 48-kg skater acquires a speed of 0.65 m/s. If the other skater acquires a speed of 0.84 m/s, what is her mass?
Answers
Answered by
Adam
Momentum is found by multiplying mass by velocity. Since both skaters start with 0 momentum, by conservation of momentum, we know that they will have identical momentum (in opposite vector directions).
This is shown as m1v1=m2v2.
So, (48kg)(0.65m/s)=(X)(0.84m/s)
solving for X shows X=37.14kg
This is shown as m1v1=m2v2.
So, (48kg)(0.65m/s)=(X)(0.84m/s)
solving for X shows X=37.14kg
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