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October 25, 2014

Homework Help: physics

Posted by angela on Friday, September 16, 2011 at 10:15pm.

A cannon is fired horizontally from a platform (see figure). The platform rests on a flat, icy, frictionless surface. Just after the shell is fired and while it is moving through the barrel of the gun, the shell (mass 3.0 kg) has an acceleration of +2450 m/s2. At the same time, the cannon has an acceleration of -0.78 m/s2. What is the mass of the cannon?

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