1
Q
distance
A
speed x time
2
Q
acceleration
A
change in speed / time
3
Q
force
A
mass x acceleration
4
Q
weight
A
mass x gravitational field strength
5
Q
efficiency
A
useful energy transferred / total energy to supplied
6
Q
momentum
A
mass x speed
7
Q
wave speed
A
frequency x wavelength
8
Q
density
A
mass / volume
9
Q
work done
A
force x distance moved in direction of force
10
Q
kinetic energy
A
1/2 x mass x speed^2
11
Q
power
A
work done/ time taken
12
Q
charge
A
current x time
13
Q
potential difference
A
current x resistance
14
Q
power
A
energy transferred/ time taken
15
Q
electrical power
A
current x potential difference
16
Q
pressure
A
force / surface area
17
Q
energy transferred
A
current x potential difference x time
18
Q
energy transferred in stretching
A
= 0.5 x spring constant x (extension)^2
