1
Q
Kinetic energy
A
O.5 x mass x speed*
2
Q
Gravitational potential energy
A
Mass x gravitational field strength x height
3
Q
Power /
A
- work done/time taken
- energy transferred/time taken
4
Q
Efficiency
A
- Useful energy/total energy
- useful power/total power
5
Q
Density
A
Mass/volume
6
Q
Charge flow
A
Current x time
7
Q
Potential difference
A
Current x resistance
8
Q
Total resistance
A
Resistance 1 + resistance 2
9
Q
Power x
A
- Current x potential difference
- current* x resistance
10
Q
Energy transferred
A
- Power x time
- charge flow x potential difference
11
Q
Wave speed
A
Frequency x wavelength
12
Q
Weight
A
Mass x gravitational field strength
13
Q
Work done
A
Force x distance
14
Q
Force
A
Spring constant x extension
15
Q
Pressure
A
Force / area
16
Q
Distance
A
Speed x time
17
Q
Acceleration
A
Change in velocity / time taken
18
Q
Resultant force
A
Mass x acceleration
19
Q
Momentum
A
Mass x velocity
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