# Sir Issac Newton

## Sir Isaac Newton

He born on the 25th December of 1642 and died on the 20th March 1726. Famous for his law of gravitation in the 17th century. He was an English physicist and mathematician.

## Newton's first law

Every object tends to remain i n one position unless an external force is applied to it.

## Newton's Second Law

The relationship between an object's mass, its acceleration, and the applied force.

## Newton's Third Law

For every action there is an equal and opposite reaction.

## Force

Defenition of forces: In physics, a force is any interaction which tends to change the motion of an object. In other words, a force can cause an object with mass to change its velocity (which includes to begin moving from a state of rest), i.e., to accelerate. Force can also be described by intuitive concepts such as a push or a pull.

## Mass

Definition of Mass: It is a body of matter with no definite shape.

## Acceleration

Definition of Acceleration: a vehicle's capacity to gain speed.