# Balanced and Unbalanced Forces

Forces and Motion
Lesson 01. Forces
1 / 44
Slide 1: Tekstslide
PhysicsSecondary EducationAge 13

In deze les zitten 44 slides, met interactieve quizzen, tekstslides en 1 video.

## Onderdelen in deze les

Forces and Motion
Lesson 01. Forces

#### Slide 1 -Tekstslide

How are you today?
😒🙁😐🙂😃

#### Slide 2 -Poll

Highlights of the Day
• describe the effects of balanced and unbalanced forces on motion

• Value :  Responsibility

#### Slide 3 -Tekstslide

Forces and Motion
Lesson 01. Forces

#### Slide 4 -Tekstslide

Describe the the following pictures.
1
2
3

#### Slide 5 -Tekstslide

What did the boy do to the cart?
Is force applied on the cart by the boy?
YES
NO

#### Slide 6 -Poll

Describe the the following pictures.
1
2
3

#### Slide 7 -Tekstslide

What did the girl do to open the door?
Is force applied on the door by the girl?
YES
NO

#### Slide 8 -Poll

Describe the the following pictures.
1
2
3

#### Slide 9 -Tekstslide

Is the rock moving?
YES
NO

#### Slide 10 -Poll

Is there a force acting on the rock?
YES
NO

#### Slide 11 -Poll

What is a "force"?

QUESTION TIME!

#### Slide 14 -Tekstslide

Forces and Motion
Lesson 01. Forces

#### Slide 16 -Video

Forces and Motion
Lesson 01. Forces

#### Slide 17 -Tekstslide

Look at the pictures below.

#### Slide 18 -Tekstslide

Drag and Drop
Balanced Forces
Unbalanced Forces

#### Slide 19 -Sleepvraag

Can you see the forces acting on an object?
YES
NO

#### Slide 20 -Poll

Can you see the EFFECTS of forces acting on an object?
YES
NO

#### Slide 21 -Poll

If you cannot see force,
how can you show it in a diagram?

Using an arrow
tail
}
length

#### Slide 23 -Tekstslide

Forces have magnitude and direction.

stronger
weaker

#### Slide 25 -Sleepvraag

The ball is at rest or not moving. What forces are acting on the ball?

#### Slide 26 -Tekstslide

Forces acting on the ball
weight by gravity

#### Slide 27 -Tekstslide

Forces acting on the ball
weight by gravity
normal force

#### Slide 28 -Tekstslide

If mass has a unit of grams, which of the following is the unit of force?
A
kilograms (kg)
B
newtons (N)
C
meters (m)

#### Slide 29 -Quizvraag

Positive and Negative Directions
Positive Directions
Negative Directions
Forward
North
Backward
South
right
left
down
up

#### Slide 30 -Tekstslide

What type of direction is "rightward"?
A
negative
B
positive
C
meters (m)

Unit of FORCE
newtons  or  N

#### Slide 32 -Tekstslide

Forces acting on the ball
weight by gravity
normal force

#### Slide 33 -Tekstslide

Example 1:
normal force
positive 10 newtons ( + 10 N)
upward is POSITIVE

#### Slide 34 -Tekstslide

Example 2:
weight by gravity
negative 10 newtons ( - 10 N)
downward is NEGATIVE

#### Slide 35 -Tekstslide

Forces acting on the ball
weight by gravity
normal force
+5 newtons
-5 newtons

#### Slide 36 -Tekstslide

Force Diagram
weight by gravity
normal force
+5 newtons
-5 newtons
wind
wind

#### Slide 37 -Tekstslide

How will you make the ball move?
+3 newtons
-3 newtons
force 1
force 2

#### Slide 38 -Tekstslide

Balanced forces are two or more forces acting on an object that are ______ in size and _______ in direction.
A
unequal ; opposite
B
equal ; opposite
C
unequal ; similar
D
equal ; similar

#### Slide 39 -Quizvraag

Forces and Motion
Lesson 01. Forces

#### Slide 40 -Tekstslide

Rate your level of understanding and participation in this lesson.
15

#### Slide 41 -Poll

00:29
TRUE OR FALSE:
Balanced forces cause no change in the speed and direction of objects.
A
TRUE
B
FALSE

#### Slide 42 -Quizvraag

00:50
What TWO things do forces have?

#### Slide 43 -Open vraag

00:55
Unbalanced forces are not equal. They cause the motion of an object to ______________.
A
stay the same
B
change