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    How Does the Second Fragment's Velocity Change After a 2D Explosion?

    Homework Statement A 4.00-kg cannon ball is flying at 18.5 m/s [0º] when it explodes into two fragments. One 2.37-kg fragment (A) goes off at 19.7 m/s [325º]. What will be the velocity of the second fragment (B) immediately after the explosion? Assume that no mass is lost during the explosion...