Gravity and laws of motion power point2

Gravity and

Laws of Motion

Sir Issac Newton 1643-1727

English mathematician and physicist

Laws of MOTION 1. Law of Inertia 2. Force = Mass x

Acceleration 3. Equal and

Opposite Reaction

Newton’s First Law1. The first law of motion states that

an object at rest will remain at rest. And an object will continue moving unless acted upon by an outside force. This law is called the This law is called the Law of Law of InertiaInertia..

NEWTON’S FIRST LAW OF NEWTON’S FIRST LAW OF MOTIONMOTION

A body at rest or in motion will remain at rest or in uniform motion unless some outside force is applied to it.

Often referred to as the”law of inertia”.

Newton’s Second Law 2. The change in an object’s motion depends

on its mass and the force acting upon it.

Force = Mass x Acceleration

Force - Push or Pull exerted on an object.Mass - The amount of matter in an object.Acceleration - The rate at which the speed

changes.

NEWTON’S SECOND LAW NEWTON’S SECOND LAW OF MOTIONOF MOTION

The change in an object’s motion depends on its mass and the force acting upon it.

F = ma

One of the most famous formulas in our world.

Newton’s Third Law

3. With every action there is an With every action there is an equal and opposite reaction.equal and opposite reaction.

NEWTON'S THIRD LAW OF NEWTON'S THIRD LAW OF MOTIONMOTION

To every action force there is an equal and opposite reaction. Sometimes called the law of momentum.

What is gravity? Gravity – the force that pulls objects

toward the center of the Earth.

The amount of gravitational force

depends upon the mass of the objects and the distance between the

objects.

Guess your weight on Mars!

This website will tell you how much you would weigh if you were on any of the other planets.

http://www.exploratorium.edu/ronh/weight/index.html

Gravity continued… Law of Universal

Gravitation

This law states that the force of

Gravity acts between all

objects in the universe.

Who are you attracted to??

Maybe not Romantically by

definitely Gravitationally!

Two bodies are attracted to each other due to their mass and the

distance between them.

Why don’t we always feel a gravitational attraction?

In order for a gravitational attraction to be felt the mass of one of the bodies must be very large. The earth is many times more massive than you are. You can sense the Force of Attraction.

Earth Orbit and Gravity

Which way did it go?

Better watch out for the

cops!