# Resultant forces

In this lesson we learn what a resultant force is and how balanced or unbalanced force affect the motion of an object.

Quiz:

# Intro quiz - Recap from previous lesson

Before we start this lesson, let’s see what you can remember from this topic. Here’s a quick quiz!

Q1.What is the unit we measure forces in?

1/8

Q2.What does a larger arrow mean?

2/8

Q3.What does a smaller arrow mean?

3/8

Q4.What does the direction of an arrow show us?

4/8

Q5.Which force is an attraction between two objects with mass?

5/8

Q6.Which force is an upward push of water on an object?

6/8

Q7.Which force slows objects down as they slide past each other?

7/8

Q8.Which force slows objects down as they travel through a liquid?

8/8

Quiz:

# Intro quiz - Recap from previous lesson

Before we start this lesson, let’s see what you can remember from this topic. Here’s a quick quiz!

Q1.What is the unit we measure forces in?

1/8

Q2.What does a larger arrow mean?

2/8

Q3.What does a smaller arrow mean?

3/8

Q4.What does the direction of an arrow show us?

4/8

Q5.Which force is an attraction between two objects with mass?

5/8

Q6.Which force is an upward push of water on an object?

6/8

Q7.Which force slows objects down as they slide past each other?

7/8

Q8.Which force slows objects down as they travel through a liquid?

8/8

# Video

Click on the play button to start the video. If your teacher asks you to pause the video and look at the worksheet you should:

• Click "Close Video"
• Click "Next" to view the activity

Your video will re-appear on the next page, and will stay paused in the right place.

# Worksheet

These slides will take you through some tasks for the lesson. If you need to re-play the video, click the ‘Resume Video’ icon. If you are asked to add answers to the slides, first download or print out the worksheet. Once you have finished all the tasks, click ‘Next’ below.

Quiz:

# Resultant Forces

Don’t worry if you get a question wrong! Forgetting is an important step in learning. We will recap next lesson.

Q1.For objects to be balanced, opposing forces must have the same...

1/8

Q2.If forces on an object are balanced, what will happen to its speed?

2/8

Q3.If forces on an object are balanced, what will happen to its direction?

3/8

Q4.A person rides a bike at a constant speed in a straight line. What can we say about the forces?

4/8

Q5.A person rides a bike at constant speed and turns left. What can we say about the forces?

5/8

Q6.A person accelerates as they ride a bike in a straight line. What can we say about the forces?

6/8

Q7.What is another word for resultant force?

7/8

Q8.If forces are balanced, what is the resultant force?

8/8

Quiz:

# Resultant Forces

Don’t worry if you get a question wrong! Forgetting is an important step in learning. We will recap next lesson.

Q1.For objects to be balanced, opposing forces must have the same...

1/8

Q2.If forces on an object are balanced, what will happen to its speed?

2/8

Q3.If forces on an object are balanced, what will happen to its direction?

3/8

Q4.A person rides a bike at a constant speed in a straight line. What can we say about the forces?

4/8

Q5.A person rides a bike at constant speed and turns left. What can we say about the forces?

5/8

Q6.A person accelerates as they ride a bike in a straight line. What can we say about the forces?

6/8

Q7.What is another word for resultant force?

7/8

Q8.If forces are balanced, what is the resultant force?

8/8

# Lesson summary: Resultant forces

## Time to move!

Did you know that exercise helps your concentration and ability to learn?

For 5 mins...

Move around:
Walk

On the spot:
Dance