Answers: 3
= ![[\frac{2m_{1} }{m_{1} +m_{2} } ]V_{1f}](/tpl/images/0696/3586/ac5cc.png)
+ ![[\frac{m_{2}-m_{1}}{m_{1}+m_{2} } ] v_{2f}](/tpl/images/0696/3586/8e818.png)
](/tpl/images/0696/3586/b1796.png)
+ ![[\frac{0.15_{}-5240_{}}{5240_{}+0.15_{} } ] (7.81_{})](/tpl/images/0696/3586/b2f94.png)
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