Equations Flashcards
1
Q
Distance Travelled
A
Average speed x time
2
Q
Acceleration
A
Change in velocity / time taken
3
Q
Force
A
Mass x Acceleration
4
Q
Weight
A
Mass x gravitational field strength
5
Q
Momentum
A
Mass x velocity
6
Q
Kinetic energy
A
1/2 x mass x (speed)2
7
Q
Wave speed
A
Distance / time
Or
Frequency x wave length
8
Q
Work done
A
Force x distance moved
9
Q
Power
A
Work done / time taken
Or
Energy transferred / time taken
10
Q
Charge
A
Current x time
11
Q
Potential difference
A
Current x resistance
12
Q
Electrical power
A
(Current)2 x resistance
13
Q
Density
A
Mass / volume
14
Q
Force extended in a spring
A
Spring constant x extension
15
Q
Efficiency
A
Useful energy transferred / total energy supplied to device
