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AQA GCSE Physics > Formulae > Flashcards

Flashcards in Formulae Deck (20)
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1

Kinetic Energy

Kinetic Energy = ½ x Mass x Speed2

KE = ½mv2

2

Gravitational Potential Energy

GPE = Mass x Gravitational Field Strength x Height

GPE = mgh

3

Power - two ways (not electricity)

Power = Energy Transferred / Time

P = E/t

AND

Power = Work Done / Time

P = W/t

4

Efficiency (two ways)

Efficiency = Useful output energy transfer / Total input energy transfer

AND

Efficiency = Useful power output / Total power input

5

Charge

Charge = Current x Time

Q = It

6

Potential Difference

Potential Difference = Current x Resistance

V = IR

7

Power - two ways (electrical)

Power = Potential Difference x Current

P = VI

AND

Power = Current2  x Resistance

P = I2R

8

(Electrical) Energy Transferred (two ways)

Energy Transferred = Power x Time

E = Pt

AND

Energy Transferred = Charge x Potential Difference

E = QV

9

Density

Density = Mass/Volume

 

10

Triple only

Pressure and volume in a gas

pressure x volume = constant

PV = constant

P1V1 = P2V2

11

Weight

weight = mass × gravitational field strength

W = mg

12

Work done

work done = force × distance

W = Fd

13

Force on a spring

force = spring constant × extension

F = ke

14

Moment of a force

moment of a force = force × distance

M = Fd

15

Pressure

pressure = force/area

P = F/A

16

Speed

speed = distance/time

or

distance = speed x time

17

Acceleration

Acceleration = change in speed/time

a = ch in s/t

18

Force and acceleration

resultant force = mass × acceleration

F = ma

19

Momentum

momentum = mass × velocity

p = mv

20

Wave speed

wave speed = frequency × wavelength