NEWTON´S LAWS OF MOTION

Isaac Newton was born in 1643 in England and became famous for his work on gravity and his three laws of motion. He was also well known for his work on light and colour, and what is now called calculus (a branch of mathematics).The famous story of an apple falling to the ground from a tree illustrates how Newton's work on gravity was inspired by things he observed in the world around him. He died in 1727

WHO WAS SIR ISAAC NEWTON?

Sir Isaac is most famous for explaining gravity, a concept we are so familiar with now it seems obvious to us. He is also famous for explaining how stuff moves in his Three Laws of Motion. We are going to look at them in this presentation

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This law states that a still object will stay still unless a force pushes or pulls it. A moving object will stay moving unless a force pushes or pulls it.Gravity and friction are forces that constantly push and pull the "stuff" on earth. So, when we roll a ball, it slowly comes to a stop. This is why astronauts can let go of a tool in space and it will stay in one spot until they grab it. If the astronaut throws the tool, it will travel in a straight line and never stop. So, the tool will stay in one place or keep on moving in the same direction and with the same speed forever, because there is no gravity or air in space to act on the tool.

NEWTON´S FIRST LAW OF MOTION : INERTIA

Newtons 1st Law of Motion - Inertia

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This law says that acceleration (gaining speed) happens when a force acts on a mass(object). Riding your bicycle is a good example of this law of motion at work. Your bicycle is the mass. Your leg muscles pushing pushing on the pedals of your bicycle is the force. When you push on the pedals, your bicycle accelerates. You are increasing the speed of the bicycle by applying force to the pedals.

NEWTON´S SECOND LAW OF MOTION : ACCELERATION

Newtons 2nd Law of Motion - Acceleration

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For every action there is an equal and opposite reaction. Forces are always found in pairs. If the forces are equal in opposite directions, the object will not move. The forces cancel each other out so that the acceleration is zero.If one force acting in one direction is greater than the force acting in the opposite direction, the object will move. For example, if you are pulling on a rope tied to load of bricks and the bricks start to move, the force you are using is a more than the bricks are using to stay in one place.

NEWTON´S THIRD LAW OF MOTION : ACTION AND REACTION

Newton's Third Law: StudyJams! Science

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