# Newtons three laws

### By: Benito WArd

# Newtons law of motion

Born on January 4, 1643, in Woolsthorpe, England, Isaac Newton was an established physicist and mathematician, and is credited as one of the great minds of the 17th century Scientific Revolution. With discoveries in optics, motion and mathematics, Newton developed the principles of modern physics. In 1687, he published his most acclaimed work, *Philosophiae Naturalis Principia Mathematica* (*Mathematical Principles of Natural Philosophy*), which has been called the single most influential book on physics. Newton died in London on March 31, 1727.

Newtons first law of motion says that an object in motion will stay in motion and a object at rest will stay at rest unless acted upon by an unbalanced force.

the soccer shown in the picture above was still at one point and would have stayed still but a unbalanced force (which is the boy) reacted on it putting the ball in motion. The ball eventually will stop due to the friction between the ball and grass that is what newtons first law explains.

In the picture above the man is exerting force to make the car accelerate newtons second law is based on the amount of energy needed to move an object. The law states that whenever a force acts on a particular object, the object will accelerate based on the direction of the force. The law goes on to state that as long as the mass of an object is constant, increasing the force exerted onto it will also increase its acceleration. On the other hand, if the force remains constant, then the increase of the mass of the object will cause acceleration to decrease.

This can be broken down into two statements. The first is that the force and acceleration of an object has a direct proportion, and the mass and acceleration of an object has an inverse proportion.

In the picture above the mans reaction is to lift the weights there is a opposite and equal reaction of the weight pulling down due to gravity.

His third law states that for every action (force) in nature there is an equal and opposite reaction. In other words, if object A exerts a force on object B, then object B also exerts an equal and opposite force on object A. Notice that the forces are exerted on different objects.