IGCSE Edexcel- Physics Equations Flashcards
1
Q
average speed
A
distance moved/time taken
1
Q
acceleration, a
A
change in velocity/time taken, (v-u)/t
2
Q
(final speed)^2, V^2
A
(initial speed)^2 + (2 x acceleration x distance moved), u^2+(2as)
3
Q
force, F
A
mass x acceleration, ma
4
Q
weight, W
A
mass x gravitational field strength, mg
5
Q
power, P
A
current x voltage, IV
6
Q
energy transferred, E
A
current x voltage x time, IVt
7
Q
Voltage, V
A
current x resistance, IR
8
Q
charge, Q
A
current x time, It
9
Q
energy transferred, E
A
charge x voltage, QV
10
Q
wave speed, v
A
frequency x wavelength, fλ
11
Q
frequency, f
A
1/time period, 1/T
12
Q
refractive index, n
A
sin(angle of incidence)/sin(angle of refraction), sin i/sin r
13
Q
sin(critical angle), sin c
A
1/refractive index, 1/n
14
Q
efficiency
A
(useful energy output/total energy output) x 100
