According to Newton’s third law of motion, which statement is always correct?

• If two moving objects collide, then both will stop moving.
• If two moving objects collide, then they will bounce off each other.
• If a moving object hits another object, then the second object will push back.
• If a moving object hits another object, then the second object will start moving.

The correct statement according to Newton's third law of motion is: If a moving object hits another object, then the second object will push back. This is because Newton's third law states that for every action, there is an equal and opposite reaction. So when an object exerts a force on another object, the second object will exert an equal and opposite force back on the first object. This is why we feel a push back when we push against a wall or a chair. In the case of a collision between two objects, both objects will experience equal and opposite forces, causing them to push back against each other. Therefore, the correct statement is that they will bounce off each other.

According to Newton's third law of motion, the statement "If a moving object hits another object, then the second object will push back" is always correct. Newton's third law states that for every action, there is an equal and opposite reaction. When an object exerts a force on another object, the second object pushes back with an equal and opposite force. So, when a moving object hits another object, the second object will indeed experience a force in the opposite direction, resulting in it being pushed back.

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."

Newton's third law states that for every action, there is an equal and opposite reaction. This means that when a force is exerted on an object, that object exerts an equal and opposite force on the source of the initial force. In the context of moving objects colliding, if one object hits another object, the second object will exert a force back on the first object.

Option 1, "If two moving objects collide, then both will stop moving," is not always correct. The objects could have different masses, resulting in different forces and velocities upon collision.

Option 2, "If two moving objects collide, then they will bounce off each other," is not always correct either. In some cases, the objects may stick together or deform upon collision.

Option 4, "If a moving object hits another object, then the second object will start moving," is not always correct either. The second object may already be stationary or could have sufficient mass and inertia to resist being moved significantly.

To determine the correct statement according to Newton's third law, you need to understand the concept of action and reaction forces and how they apply to the collision of objects.