Solved: A 42-g firecracker is at rest at the origin when it explodes into three pieces
Chapter 9, Problem 52(choose chapter or problem)
A 42-g firecracker is at rest at the origin when it explodes into three pieces. The first, with mass 12 g, moves along the x-axis at 35 m/s. The second, with mass 21 g, moves along the y-axis at 29 m/s. Find the velocity of the third piece.
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