# Rifle Recoil

Classical Mechanics Level 2

Many people are familiar with the fact that a rifle recoils when fired. This recoil is the result of action-reaction force pairs. A gunpowder explosion creates hot gases that expand outward allowing the rifle to push forward on the bullet. Consistent with Newton's third law of motion, the bullet pushes backwards upon the rifle. Which of the following statements is true concerning the acceleration of the recoiling rifle?

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