PHYSICS · Single correct · A Level · Physics · Mechanics and materials · Mechanics and materials
Problem
When a gun is fired, the bullet moves forward and the gun recoils backward. At the instant the bullet leaves the barrel, which comparison of forces is correct?
(a) The force on the bullet is greater because the bullet moves faster.
(b) No force acts on the gun; it recoils only to conserve momentum.
(c) The forces on the bullet and the gun are equal in magnitude but opposite in direction.
(d) The force on the gun is greater because the gun is heavier.