Equations Flashcards
1
Q
Weight
A
Mass x gravitational field strength
2
Q
Work done
A
Force x distance
3
Q
Force applied to string
A
Spring constant x extension
4
Q
Moment of a force
A
Force x distance
5
Q
Pressure
A
Force normal to a surface / area of surface
6
Q
Distance
A
Speed x time
7
Q
Acceleration
A
Change in velocity / time taken
8
Q
Resultant force
A
Mass x acceleration
9
Q
Momentum
A
Mass x velocity
10
Q
Kinetic energy
A
1/2 x mass x speed^2
11
Q
Gravitational potential energy
A
Mass x gravitational field strength x height
12
Q
Power
A
Energy transferred / time
13
Q
Power 2
A
Work done / time
14
Q
Efficiency
A
Useful input energy transfer / total input energy transfer
15
Q
Charge flow
A
Current x time
16
Q
Potential difference
A
Current x resistance
17
Q
Power
A
Current^2 x resistance
18
Q
Energy transferred
A
Power x time
19
Q
Density
A
Mass / volume
