Equations Flashcards
1
Q
Weight
A
Mass x gravitational field strength
2
Q
Wavespeed
A
Frequency x wave length
OR
Distance / time
3
Q
Distance travelled
A
Average speed x time
4
Q
Acceleration
A
Change in velocity / time taken
5
Q
Force
A
Mass x acceleration
6
Q
Kinetic energy
A
1/2 x mass x (speed)^2
7
Q
Momentum
A
Mass x velocity
8
Q
(Change in) Gravitational potential
A
Mass x gravitational field strength x change in vertical height
9
Q
Efficiency
A
Useful energy transferred / total energy supplied
10
Q
Work done
A
Force x distance moved
11
Q
Power
A
Work done / time taken
OR
Energy transferred / time taken
12
Q
Charge
A
Current x time
13
Q
Engery transferred
A
Charge moved x potential difference
14
Q
Potential difference
A
Current x resistance
15
Q
Electrical power
A
Current x potential difference
OR
(Current)^2 x resistance
