Newton's Third Law
Newton's Third Law of Motion states that "whenever one object exerts force on a second object, the second exerts an equal and opposite force on the first." Or in simpler terms: to every action there is an equal and opposite reaction. This concept, at least to this author, is little bit tricky to understand. When you push against an object, you don't feel it push back, or do you?
When you push against the wall, it seems that the wall is not pushing back. However, it has to push back or the wall would fall down. Or think of it in the case of a rocket. When a rocket launches, as the gas from the rocket pushes against the ground, the ground pushes back, forcing the rocket to go up into space.
