# Les 5 — Balanced and unbalanced forces

This lesson
• Balanced and unbalanced forces
• A video
• Resultant force
1 / 17
Slide 1: Tekstslide
Natuurkunde / ScheikundeMiddelbare schoolhavoLeerjaar 1

In deze les zitten 17 slides, met tekstslides en 1 video.

## Onderdelen in deze les

This lesson
• Balanced and unbalanced forces
• A video
• Resultant force

#### Slide 1 -Tekstslide

Learning goals
• Recognise balanced and unbalanced forces.
• Name two things balanced forces can do.
• Name two things unbalanced forces can do.
• Calculate resultant force.

#### Slide 2 -Tekstslide

§1.2 Balanced and unbalanced
forces

• Balanced forces
• Unbalanced forces
• Resultant force

#### Slide 3 -Tekstslide

Balanced and unbalanced
forces

#### Slide 4 -Tekstslide

Video — Exercise

• Acceleration
• Deceleration
• Constant velocity
• Stationary
• Weight
• equal
What do the words below mean?

#### Slide 5 -Tekstslide

Acceleration
Speeding up
Decceleration
Slowing down
Constant velocity
Traveling at one speed
Stationary
Standing still
Weight
The force that pulls you to the earth
Equal
Two things being the same

0

#### Slide 7 -Video

The forces on an object are
balanced.
How does this effect its motion when...

• It is stationary?

• it is moving at a constant speed?

#### Slide 8 -Tekstslide

Balanced Forces
When an object is...
• standing still –> keeps standing still

• Moving –> travels at a constant speed.

#### Slide 9 -Tekstslide

The forces on an object are unbalanced.
How does this effect its motion when...

• it is stationary?

• it is moving at a constant speed?

#### Slide 10 -Tekstslide

Unbalanced forces
When an object is...
• standing still –> starts moving

• Moving –> accelerates or decelerates

#### Slide 11 -Tekstslide

Resultant force
Homework
Do: the workbook exercises of §1.2

Resultant force?

Resultant force?

Resultant force?

Resultant force?

#### Slide 16 -Tekstslide

Learning goals
• Recognise balanced and unbalanced forces.
• Name two things balanced forces can do.
• Name two things unbalanced forces can do.
• Calculate resultant force.