Posted by **Anonymous** on Sunday, August 4, 2013 at 8:46am.

After several large firecrackers have been inserted into its holes, a bowling ball is projected into the air using a homemade launcher and explodes in midair. During the launch, the 5.33-kg ball is shot into the air with an initial speed of 11.3 m/s at a 42.9° angle; it explodes at a peak of its trajectory, breaking into three pieces of equal mass. One piece travels straight up with a speed of 3.45 m/s. Another piece travels straight back with a speed of 2.39 m/s. What is the velocity of the third piece?

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