Summary LAWS OF MOTION

The Laws of Motion

,The Laws of Motion

The description of an object in motion included its position, velocity, and
acceleration.
There was no consideration of what might influence that motion.
Two main factors need to be addressed to answer questions about why the
motion of an object will change.
 Forces acting on the object
 The mass of the object
Dynamics studies the causes of motion.
Will start with three basic laws of motion
 Formulated by Sir Isaac Newton




Introduction

,Sir Isaac Newton

1642 – 1727
Formulated basic laws of mechanics
Discovered Law of Universal
Gravitation
Invented form of calculus
Many observations dealing with light
and optics




Section 5.1

, Force

Forces in everyday experience
 Push on an object to move it
 Throw or kick a ball
 May push on an object and not be able to move it
Forces are what cause any change in the velocity of an object.
 Newton’s definition
 A force is that which causes an acceleration




Section 5.1