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Two ice skaters stand facing each other at rest on a frozen pond. They push off...

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 0.69 m/s. If the other skater acquires a speed of 0.87 m/s, what is her mass?

____kg

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Answer #1

here linear momentum remain conserve

initiaaly they are at rest

after they push against each other

0 = m1v1 - m2v2

m1v1 = m2v2

m2 = m1v1/v2

m2 = 48 * 0.69/0.87

m2 = 38.07 kg

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