February 24, 2017

Homework Help: Physics

Posted by Joan on Sunday, January 16, 2011 at 12:23am.

Explosives are used to blow a rock apart. The explosion blows the rock into three fragments. Two fragments go off at a 76 degree angle to each other--a 6.2 kg piece at 26.7 m/s and a 5.5 kg piece at 23.3 m/s. Calculate the speed of the third piece, if it has a mass of 3.2 kg.

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