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AQA GCSE Physics > Equations > Flashcards

Flashcards in Equations Deck (42)
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1

How would you calculate kinetic energy?

1/2 x mass x speed^2

2

How would you calculate GPE?

mass x gravitational field strength x height

3

How would you calculate power, using time?

work done/time taken

OR

energy transferred/time taken

4

How would you calculate efficiency?

useful energy output/total energy output

OR

useful power output/total power output

5

How would you calculate charge flow?

current x time

6

How would you calculate potential difference?

current x resistance

7

How would you calculate total resistance?

resistance of component 1 + resistance of component 2

8

How would you calculate power using potential difference?

current x potential difference

9

How would you calculate power using resistance?

(current)^2 x resistance

10

How would you calculate energy transferred?

power x time

OR

charge flow x potential difference

11

How would you calculate density?

mass/volume

12

How would you calculate wave speed?

frequency x wavelength

13

How would you calculate weight?

mass x gravitational field strength

14

How would you calculate work done?

force x distance moved along the line of action

15

How would you calculate force?

spring constant x entension

16

How would you calculate moment of a force?

force x distance perpendiculat to direction

17

How would you calculate pressure?

force normal to a surface/area of that surface

18

How would you calculate distance travelled?

speed x time

19

How would you calculate acceleration?

change in velocity/time

20

How would you calculate resultant force?

mass x acceleration

21

How would you calculate momentum?

mass x velocity

22

What is the equation for kinetic energy?

EK = 1/2mv^2

23

What is the equation for GPE?

EP = mgh

24

What is the equation for power, using work done?

P = W/t

25

What is the equation for charge flow?

Q = I x t

26

What is the equation for potential difference?

V = I x R

27

What is the equation for total resistance?

RT = R1 + R2

28

What is the equation for power, using potential difference?

P = I x V

29

What is the equation for power, using energy transferred?

P = E/t

30

What is the equation for power, using resistance?

P = I^2 x R