# Forces and work

In this lesson we define work done, introduce the equation for work done and use it to calculate force and distance.

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.A single force that has the same effect as all the original forces acting together is called what?

1/8

Q2.Identify ALL 3 vector quantities below

Select three (3) boxes

2/8

Q3.Calculate the the sum of the vectors shown

3/8

Q4.Calculate the easterly resultant force

4/8

Q5.Recall the equation that links gravitational field strength, mass, and weight

5/8

Q6.Which statement could describe an object's motion when the resultant force is 0 N?

Select one (1) boxes

6/8

Q7.Which statement could best describe an object's motion when the resultant force is unbalanced?

Select one (1) boxes

7/8

Q8.Which statement best describes 'displacement'

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.A single force that has the same effect as all the original forces acting together is called what?

1/8

Q2.Identify ALL 3 vector quantities below

Select three (3) boxes

2/8

Q3.Calculate the the sum of the vectors shown

3/8

Q4.Calculate the easterly resultant force

4/8

Q5.Recall the equation that links gravitational field strength, mass, and weight

5/8

Q6.Which statement could describe an object's motion when the resultant force is 0 N?

Select one (1) boxes

6/8

Q7.Which statement could best describe an object's motion when the resultant force is unbalanced?

Select one (1) boxes

7/8

Q8.Which statement best describes 'displacement'

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:

# Work Done

Complete the quiz to see how much you have remembered from the lesson 'Work Done'. They may also be some questions on your previous lesson.

Q1.What is the unit for work done?

1/6

Q2.1 J is equal to how many Newton-metres?

2/6

Q3.What is the equation that links distance, force and work done?

3/6

Q4.When work is done on an object against a frictional force, what happens to the object?

4/6

Q5.A man pushes a trolley with a force of 27 N a distance of 25 m. How much work did he do? Give your answer to 2 significant figures

5/6

Q6.A girl does 1200 J of work climbing a staircase. She has a weight of 400 N. How high did she climb?

6/6

Quiz:

# Work Done

Complete the quiz to see how much you have remembered from the lesson 'Work Done'. They may also be some questions on your previous lesson.

Q1.What is the unit for work done?

1/6

Q2.1 J is equal to how many Newton-metres?

2/6

Q3.What is the equation that links distance, force and work done?

3/6

Q4.When work is done on an object against a frictional force, what happens to the object?

4/6

Q5.A man pushes a trolley with a force of 27 N a distance of 25 m. How much work did he do? Give your answer to 2 significant figures

5/6

Q6.A girl does 1200 J of work climbing a staircase. She has a weight of 400 N. How high did she climb?

6/6

# Lesson summary: Forces and work

## Time to move!

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

For 5 mins...

Move around:
Jog

On the spot:
Chair yoga