A cannon is fired horizontally from a platform . 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 3.2 kg) has an acceleration of 12500 m/s2. At the same time, the cannon has an acceleration of �0.76 m/s2. What is the mass of the cannon?
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