Equations Flashcards
1
Q
Average speed =
A
average speed = distance /time
2
Q
Acceleration a =
A
Acceleration = change in velocoty /
time
a = v-u / t
3
Q
eqn of motion
v2 =
A
v2 = u2 + 2as
4
Q
Resultant Force F =
A
F = ma
5
Q
Weight W =
A
W = mg
6
Q
Momentum p
A
p = mv
7
Q
equation linking force and momentum
F =
A
force = change in momentum / time
8
Q
Moment =
A
Moment = force x perpendicular distant from pivot
9
Q
Power P =
A
Power = Energy transferred / time Power = work done / time P = I x V
10
Q
Voltage V
A
V = I x R
11
Q
Charge Q =
A
Q = I x t
12
Q
Energy transferred E =
A
Energy transferred = work done
E = Q x V
or
V = E/Q
13
Q
Wave speed v =
A
wave speed = frequency x wavelength
14
Q
frequency f =
A
frequency = 1 / Time period f = 1 / T
15
Q
refractive index n =
A
n = sin i / sin r
