Topic 7 & 8 Forces, work & power

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Total cards: 24•Content version: v3•Public deck•Updated: 8/1/2026

Card preview (24)

Front (Question)

1 What are the units for energy?

Back (Answer)

joules

Front (Question)

2 How is energy transferred to a light bulb?

Back (Answer)

by electricity

Front (Question)

3 How is energy transferred away from a light bulb?

Back (Answer)

by light, by heating

Front (Question)

4 Describe one other way in which energy can be transferred.

Back (Answer)

by sound, by forces

Front (Question)

5 What is a force?

Back (Answer)

a push or a pull

Front (Question)

6 What are the units for measuring forces?

Back (Answer)

newtons

Front (Question)

7 What is your weight?

Back (Answer)

the force of gravity pulling on you

Front (Question)

8 What does work done mean in physics?

Back (Answer)

energy transferred by a force

Front (Question)

9 What does power measure?

Back (Answer)

how fast energy is transferred/work is done

#10

Front (Question)

10 What are the units for power?

Back (Answer)

watts

#11

Front (Question)

11 What does work done mean?

Back (Answer)

energy transferred by a force

#12

Front (Question)

12 What are the units for work done?

Back (Answer)

joules

#13

Front (Question)

13 How do you calculate work done?

Back (Answer)

Multiply force by distance moved in the direction of the force.

#14

Front (Question)

14 What does power mean?

Back (Answer)

how fast energy is transferred

#15

Front (Question)

15 What are the units for power?

Back (Answer)

watts

#16

Front (Question)

16 How do you calculate power?

Back (Answer)

work done divided by time

#17

Front (Question)

17 Two people with the same weight go up a flight of stairs. How can you tell which one has exerted more power?

Back (Answer)

the one that went up fastest

#18

Front (Question)

18 Name two non-contact forces.

Back (Answer)

two from: gravity, magnetism, static electricity

#19

Front (Question)

19 What is a magnetic field?

Back (Answer)

the space around a magnet where it can affect things

#20

Front (Question)

20 What is a vector quantity?

Back (Answer)

a quantity that has both magnitude and direction

#21

Front (Question)

21 Name two contact forces.

Back (Answer)

any two from: normal contact force, upthrust, air resistance, etc.

#22

Front (Question)

22 Name three non-contact forces.

Back (Answer)

gravity, magnetism, static electricity

#23

Front (Question)

23 How is a force represented in a diagram?

Back (Answer)

arrow showing direction, with length indicating size

#24

Front (Question)

24 What are the units for measuring force?

Back (Answer)

newtons