As the village blacksmith walks along one day he sees a group of monks circling around an apple tree and chanting something about the truth being expanded.
When he stops and listens he learns that a man named Newton became inspired by falling of apples.
The monks explain that Newton then came up with the equation ΣF = ma (where F and a are both vectors) which means that the sum of the forces in a direction is equal to the mass, not to be confused with weight, multiplied by the acceleration, one example being gravity, in a direction.
The F and a are vectors, indicated by bold.
The monks are rejoicing since they had only previously been able to understand the motion of objects.
Now they can understand interaction of objects with mass through the use of vector components, the old testament of the truth, and their newfound equation.
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