Physics · Laws of Motion
A rifle fires a light bullet, resulting in a large forward acceleration of the bullet and a minimal backward recoil acceleration of the rifle. According to Newton's third law, the forces are equal and opposite. Why is the rifle's acceleration so much smaller than the bullet's?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1The reaction force of the bullet acts for a shorter duration than the action force.
- 2Acceleration is inversely proportional to mass for a given force, and the rifle has a much greater mass than the bullet.✓
- 3The action force exerted by the rifle on the bullet is greater than the reaction force.
- 4Action and reaction forces cancel each other out within the rifle system.
Correct answer
Acceleration is inversely proportional to mass for a given force, and the rifle has a much greater mass than the bullet.
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