Lesson 3 - Types of Forces

1. describe force; and 

2. distinguish between different types of forces.

The learners are able to:

1. Differentiate the different types of forces

What is a force?

• A force is a push or a pull resulting due to the interaction between two objects.

• Force is external (coming from a source outside the subject affected) and results only when there is interaction between objects.

• You cannot see force.

• You can only see what it does.

What do forces have?

• Forces have size.

• Forces are measured in Newtons which is abbreviated as "N".

• Forces are measured using a Newton Meter or force meter.

When a force is exerted on an object, it can change the object’s:

• speed

• direction of movement

• shape (for example, an elastic band gets longer if you pull it)

What Is It

Vocabulary (Word Meanings:

attraction: the process between objects being drawn towards each other

charged: either positively charged or negatively charged

external (gawas): coming or taken from a source outside the subject affected

interaction: a time when two or more people or things communicate with

or react to each other

repulsion: force by which one object pushes another one away from

A

a Newton meter or force meter or spring scale

Photo credit: https://bit.ly/3cC8eu0

6

Force can be classified into two general groups:

1. Contact forces

2. Non-contact forces