In 1686, the 43 years old Isaac Newton presented his three laws of motion in the “Principia Mathematica Philosophiae Naturalis”. The laws that shaped our modern way of life.
I have not as yet been able to discover the reason for these properties of gravity from phenomena, and I do not feign hypotheses. For whatever is not deduced from the phenomena must be called a hypothesis; and hypotheses, whether metaphysical or physical, or based on occult qualities, or mechanical, have no place in experimental philosophy.
In this philosophy particular propositions are inferred from the phenomena, and afterwards rendered general by induction.
1st Law of Motion
“Every object persists in its state of rest or uniform motion in a straight line unless it is compelled to change that state by forces impressed on it.”
2nd Law of Motion
“Force is equal to the change of momentum (mV) per change in time. For a constant mass, force equals mass times acceleration.”
3rd Law of Motion
“For every action, there is an equal and opposite re-action.”