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a bullet of mass M is fired horizontally with speed 150 m/s î explodes into 3...

a bullet of mass M is fired horizontally with speed 150 m/s î explodes into 3 pieces. One piece has mass M/4 and flies with speed 170 m/s î after explosion. Another piece has mass M/4 and flies with speed 20 m/s ĵ after explosion. You find two of the fragments and want to find the location of the third. In what direction and at what speed did the third fragment fly after the explosion?

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