CONSERVATION OF MOMENTUM – The Third Law | Newton’s Law Of Motion
CONSERVATION OF MOMENTUM – In this topic, we will discuss the second law from Isaac Newton’s Law of Motion: the Conservation of Momentum.
Following up in our continuation with the Laws of Motion, let’s recap the second law. Again it states that:
” The acceleration of an object as produced by a net force is directly proportional to the magnitude of the net force, in the same direction as the net force, and inversely proportional to the mass of the object. “
The second law, can be expressed in the scientific notation “F = ma“. Now, onto the third law. The third law of motion states that:
“For every action there is an equal and opposite reaction.”
It means an object with a directed force will always be countered by another object of the opposite equal force, thus, an action-reaction situation.
NASA also said that the third law states that if a body exerts a force on a second body, the second body exerts a force that is equal in magnitude and opposite in direction to the first force.
One example is pushing a wall. The action is you pushing the wall and in reaction, the wall pushes you in the opposite direction.
Another great example is the book against the table. The book lying on the table is exerting a downward force on the table, while the table exerts an upward reaction force on the book. The book remains at rest because the forces are equal and opposite.
NEWTON’S LAWS OF MOTION
CONSERVATION OF MOMENTUM
