Which sentence states Newton’s third law? A. If two objects collide, each object exerts a force in the same direction as the other. B. If two objects collide, each object exerts a force equal to and in the opposite direction of the other. C. A collision between a moving object and a stationary object is elastic. D. A collision between a moving object and a stationary object is inelastic. E. If two objects collide, the moving object exerts a greater force than the stationary object.

B. If two objects collide, each object exerts a force equal to and in the opposite direction of the other.

Explanation:

Newton's law states that for every force there is an equal opposite force.

the box does not move because you need to use a force greater than 300 n. you are only using 50 n. it needs to at least be 301 n for the box to move because then it is an unbalanced force and it will move the way that the greater force is pushing it. if you use only 300 n it will be a balanced force and will not move because the force you are exerting on the   box is the same as its force.

hope this !

im sorry if i went too in depth, i am going to include a link to a video on khan academy that will explain this.   hope that you like the video and that it explains more in detail to you.

that is the link.