Question: A 2 0 kg cannonball originally at rest explodes into three pieces. After the explosion, a 3 kg piece moves directly north at 1 8

A 20 kg cannonball originally at rest explodes into three pieces. After the explosion, a 3 kg piece moves directly
north at 18 m/s, and a 9 kg piece moves directly east at 8 m/s.
(a) Sketch a diagram showing the total momentum during the collision is conserved.
(b) Find the mass and speed of the missing third piece.

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