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# Newton's Third Law of Motion
For every action there is an equal opposite reaction.
Note that the **action** force and the **reactant** force are acting on **different** objects.
This is why the $$F\_N \neq \text{ the reactant force of weight:}$$as its instead
The gas is accelerated downwards through explositions and combustions.
Every object is like an elastic band, although not as readily elastic.
Although self explanatory, an object is only able to be put in motion by a force that was exerted **on** the object. A force exerted **by** an object does not influence that object.
Therefore, the prepositions **on** and **by** are very important and should be used with care.
