Answer:
A- He was a professor of mathematics at Cambridge University.
B- In his book, Mathematical Principles of Natural Philosophy, Newton laid out three laws of motion that are still the basis for studying how things move.
Step-by-step explanation:
Newton entered Trinity College as an undergraduate in 1661 and became a Fellow in 1667. In 1669, he became Lucasian Professor of Mathematics at Cambridge University, a position he held until 1701.
Philosophiae Naturalis Principia Mathematica
First published in 1687, Principia (Philosophiae Naturalis Principia Mathematica) is one of the most important books on natural philosophy in which Newton establishes the modern science of dynamics and outlines his three laws of motion.