Let’s clarify Newton's third law of motion in relation to the provided options:
Newton's Third Law of Motion:
It states that for every action, there is an equal and opposite reaction. This means that when one object exerts a force on another object, the second object exerts a force of equal magnitude but in the opposite direction on the first object.
Now, let's evaluate the options:
a. If two moving objects collide, then they will bounce off each other.
- This is not always true. Inelastic collisions can occur where the objects do not bounce off each other but rather stick together or deform.
b. If a moving object hits another object, then the second object will push back.
- This statement is true and is a direct application of Newton's third law. The second object exerts an equal and opposite force on the first object.
c. If two moving objects collide, then both will stop moving.
- This is not true. They can collide and continue moving after the collision, depending on the type of collision.
d. If a moving object hits another object, then the second object will start moving.
- This is not necessarily true. If the second object is fixed or immovable (like a wall), it won't start moving.
Therefore, the best answer that universally applies to Newton's third law is indeed b. The option a is not universally correct because it depends on the type of collision, whether it is elastic or inelastic. So, while option a may occur in some scenarios, it is not accurate for all cases.