Question : Why does a cannon recoil after firing?
Option 1: Conservation of energy
Option 2: Backward thrust of gases produced
Option 3: Newton's third law of motion
Option 4: Newton's first law of motion
Correct Answer: Newton's third law of motion
Solution : The correct option is Newton's third law of motion.
Newton's third rule of motion , which states that there is an equal and opposite reaction to every action, causes a cannon to recoil when it fires. A projectile is fired from a cannon by firing a high-velocity stream of gas created by the ignition of gunpowder or another propellant. This motion also generates an equal and opposite reaction force, driving the cannon backwards by Newton's third law.
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