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GCSE Science Edexcel Combined > Physics Equations and Units > Flashcards

Physics Equations and Units Flashcards

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1
Q

What is the equation that links mass, gravitational field strength and weight?

A 
weight = mass x gravitational field strength
W = m x g
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2
Q

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

A

Work done = force x distance

W = F x s

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3
Q

What is the equation that links force applied to a spring, spring constant and the extension?

A

Force applied to a spring = spring constant x extension

F = k x e

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4
Q

What is the equation that links distance, speed and time

A 
distance = velocity x time
s = v x t
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5
Q

What is the equation that links acceleration, chance in velocity and time taken?

A 
acceleration = chance in velocity / time
a = (v-u)÷t
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6
Q

What’s the equation that links resultant force, mass and acceleration?

A

resultant force = mass x acceleration

F = m x a

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7
Q

What’s the equation that links momentum, mass and velocity? (Higher only)

A 
momentum = mass x velocity
p = m x v
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8
Q

What is the equation that links kinetic energy, mass and velocity?

A

kinetic energy = 0.5 x mass x (velocity)2

Ek=0.5 x m x v2

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9
Q

What is the equation that links gravitational potential energy, mass, gravitational field strength and height?

A

gravitational potential energy = mass x gravitational field strength x height
Ep = m x g x h

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10
Q

What is the equation that links power, energy transferred and time?

A 
power = energy transferred / time
P = E ÷ t
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11
Q

What is the equation that links power, work done and time?

A 
power = work done / time
P = W ÷ t
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12
Q

What is the equation that links efficiency, useful energy transfer and total input energy transfer?

A

Efficiency = useful output energy ÷ total energy input

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13
Q

What is the equation that links efficiency, useful power output and total power input?

A

efficiency = total power output ÷ total power input

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14
Q

What is the equation that links wave speed, frequency and wavelength?

A

wave speed = frequency x wavelength

v = f x λ

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15
Q

What is the equation that links charge flow, current and time?

A

charge flow = current x time

Q = I x t

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16
Q

What is the equation that links potential difference, current and resistance?

A

potential difference = current x resistance

V = I x R

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17
Q

What is the equation that links power, potential difference and current?

A 
Power = potential difference x current
P = V x I
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18
Q

What is the equation that links power, current and resistance?

A 
Power = (current)2 x resistance
P = I2 x R
19
Q

What is the equation that links energy transferred, power and time?

A

energy transferred = power x time

E = P x t

20
Q

What is the equation that links energy transferred, charge flow and potential difference?

A

energy transferred = charge flow x potential difference

E = Q x V

21
Q

What is the equation that links density, mass and volume?

A 
density = mass ÷ volume 
(p = m ÷ v)
22
Q

What is the unit of weight?

A

Newtons (N)

23
Q

What is the unit of mass?

A

kilograms (kg)

24
Q

What is the unit of gravitational field strength?

A

Newtons per kilogram (N/kg)

25
Q

What is the unit of work done?

A

Joules (J)

26
Q

What is the unit of force?

A

Newtons (N)

27
Q

What is the unit of distance?

A

metres (m)

28
Q

What is the unit of velocity?

A

metres per second (m/s)

29
Q

What is the unit of time?

A

seconds (s)

30
Q

What is the unit of acceleration?

A

metres per second2 (m/s2)

31
Q

What is the unit of momentum?

A

Nm/s

32
Q

What is the unit of kinetic energy?

A

Joules (J)

33
Q

What is the unit of gravitational energy?

A

Joules (J)

34
Q

What is the unit of height?

A

metres (m)

35
Q

What is the unit of power?

A

Watts (W)

36
Q

What is the unit of wave speed?

A

metres per second (m/s)

37
Q

What is the unit of frequency?

A

Hertz (Hz)

38
Q

What is the unit of wavelength?

A

metres (m)

39
Q

What is the unit of charge flow?

A

Coulombs (C)

40
Q

What is the unit of current?

A

Amperes (A)

41
Q

What is the unit of potential difference?

A

Volts (V)

42
Q

What is the unit of resistance?

A

Ohms (Ω)

43
Q

What is the unit of density?

A

kilograms per metre3 (kg/m3)

GCSE Science Edexcel Combined (5 decks)

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