Post on 15-May-2015
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!