FORCE- NEWTONS LAWS OF MOTION

Sir Isaac Newton’s Contributions

• Calculus

• Light is composed of rainbow colors

• Reflecting Telescope

• Laws of Motion

• Theory of Gravitation

• Phosphorous

Kinematics

the description of how objects move without considering the explanation of why they move (WHAT)

Dynamics

The study of causes of motion and the reasons why a change in motion may occur (WHY)

What is a force?

• A pull or push

• May accelerate

• May change shape

• nothing may happen

Definition of Force

• A push or pull exerted on an object that can cause a change in motion

• Vector quantity

• Symbol: F, Units: Newtons (N)

What are Newtons defined as?

defined as the amount of force required to give 1 kg mass an acceleration of 1 m/s²

Types of Forces - General

Contact Force

a force that only exists when contact is being made

ex. push a plate across a table, holding a glass

Types of Forces - General

Field Forces

a force that exists without contact being made

ex. a book falling off a table

What are Newton’s Three Laws (Brief)

1. Object at rest stays at rest, object in motion remains in motion

2. When an unbalanced force acts on an object, it accelerates the same direction as the force

3. when two objects interact they exert forces on each other that are equal and opposite