A girl is going ice skating for the first time. She has gotten herself into the

Question

A girl is going ice skating for the first time. She has gotten herself into the middle of an ice rink and cannot figure out how to make the skates work. Every motion she makes simply cause her feet to slip on the ice and leaves her in the same place she started. She decides that she can get off the ice by throwing both her gloves in the opposite direction. Fortunately she has brought massive insulated gloves.
Suppose she has mass 64.0 kg and her gloves together have mass 1.30 kg. If she throws the gloves as hard as she can away from her, they leave her hand with a speed 4.70 m/s. she moves and what's her speed?

Explanation / Answer

conservation of momeutm ;

m1 u1 + m2 u2 = m1 v1 + m2 v2 ;

0 = 64 v + 1.3 * 4.7 ;

v= 9.54 e -2 m /s <--------ans

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