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A 42-g firecracker is at rest at the origin when it explodes into three pieces. The...

A 42-g firecracker is at rest at the origin when it explodes into three pieces. The first, with mass 21 g, moves along the x axls at 29 m/s . The second, with mass 12 , moves along they axis at 35 m/s . a) What is the mass of third plece ? b) What is the magnitude of the velocity of the third piece? c) Whal angle does the third plece make with x axis ?
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In this question we have to find the velocity of third fragment, mass of third fragment and angle made by its velocity vector with x axis.

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