A cannon recoils as it fires because the cannonball is propelled into motion. In a perfect world, the kinetic energy of the cannonball and the cannon acquires parity. the same as the energy of recoil.
An object's kinetic energy is defined as the energy it has as a result of motion. Any item must be subjected to force in order to be moved. Energy is transferred to the item at a steady speed during the work that is being done on it. All display motion, which is the result of kinetic energy being transmitted to the object. There is motion even in the air we breathe! The universe is a moving thing. The universe in which we exist is constantly in motion.
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