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A 6.4 kg cannon ball is flying at 25.5 m/s [E] when it explodes into two fragments. One 2.7 kg fragment (A) goes off at

A 6.4 kg cannon ball is flying at 25.5 m/s [E] when it explodes into two fragments. One 2.7 kg fragment (A) goes off at 6.9 m/s [55o S of E]. What will be the magnitude of the velocity of the second fragment (B) immediately after the explosion? Assume that no mass is lost during the explosion.

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