What was Issac Newton famous for and how does it affect today?

Sir Isaac newton was an English physicist and mathematician who is widely regarded as one of the most influential scientists of all time and as a key figure in the scientific revolution.

He was the scientist who formulated laws of gravity (better know as three laws of Motion)

5th grade students are taught Newton's laws of motion and students learn it till graduation and above levels as well.

The first law is law of inertia states that an object at rest tends to stay at rest and that an object in uniform motion tends to stay in uniform motion unless acted upon by a net external force

The Second law is states Force is equal to mass X its acceleration

The Third law states that for every action there is an equal and opposite reaction

All the above three were derived after Newton seeing an Apple falling from a tree and he thought why is this Apple falling down and not going up. This triggered him to discover the Laws of Motion.