Friction and the Laws of Motion - Physics Made Simple - 4th Grade | Children's Physics Books , livre ebook
64
pages
English
Ebooks
2017
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64
pages
English
Ebooks
2017
Vous pourrez modifier la taille du texte de cet ouvrage
Obtenez un accès à la bibliothèque pour le consulter en ligne En savoir plus
Publié par
Date de parution
15 mai 2017
Nombre de lectures
0
EAN13
9781541918894
Langue
English
Friction and the Laws of Mot ion Physics Made Si mple
4th G rade Children’s Physics B ooks
Speedy Publishing LLC
40 E. Main St. #1156
Newark, DE 19711
www.speedypublishing.com
Copyright 2017
All Rights reserved. No part of this book may be reproduced or used in any way or form or by any means whether electronic or mechanical, this means that you cannot record or photocopy any material ideas or tips that are provided in this book
I n this book, we’re going to talk about Friction and the Laws of Motion. So, let’s get right to it!
Sir Isaac Newton
T he three laws of motion that Sir Isaac Newton, the famous physicist, stated over three centuries ago might seem like common sense today. However, when he first proposed them, they were thought to be a revolution in scientific thought.
His concepts became the foundation for the study of physics.
A t the beginning, Newton was studying the motion of the planets. He began to describe how these huge planets and other celestial objects would behave when forces, such as gravity, influenced them. To formulate his laws, Newton had three important factors— the mass of an object, the length it travels, and the time period it takes.
tablets
A stationary golf ball.
NEWTON’S FIRST LAW OF MOTION
N ewton’s first law of motion tells us that if an object is stationary it will remain that way unless a force is applied to it. Also, an object that’s in motion will stay that way unless a force prevents it from staying in motion.
W hen an object stays at rest, we say that it’s in a state of “inertia.” Newton’s law means that an object doesn’t suddenly stop, completely change directions, or start moving all by itself. Some force must act upon the object to get it to move.
