牛顿第三定律：作用力与反作用力

Newton's third law states that when object A puts a force on object B, object B puts an equal and opposite force back on object A.

The acceleration of an object depends not only on the force acting on it but also on its mass, as described by Newton's second law.

The equal and opposite forces described by Newton's third law always act on different objects, which means they cannot cancel each other out.