Question

A cannon after firing recoils due to

• A. Conservation of energy
• B. Backward thrust of gases produced
• C. Newton's first law of motion
• D. Newton's third law of motion

Answer 1

The correct option is D Newton's third law of motion

When the cannon fires the cannon ball, it applies large force on ball due to which cannon ball travels large distance. This force is action.

At the same time, cannon ball applies same force on cannon due to which cannon recoils. This force is reaction.

As it is action-reaction pair, Option D is correct.