According to Newton’s third law of motion, the correct statement is: If a moving object hits another object, then the second object will push back.
This law states that for every action, there is an equal and opposite reaction. This means that if one object exerts a force on another object, the second object exerts a force of equal magnitude and in the opposite direction back on the first object.
The other statements do not accurately represent Newton's third law:
- The second object does not necessarily start moving just because it is hit.
- Both objects do not have to stop moving; they may continue moving depending on the collision type (elastic or inelastic).
- They do not necessarily bounce off each other; it depends on the nature of the collision.
Therefore, the first option is the most accurate.