Equations Flashcards
(19 cards)
1
Q
Weight
A
Mass x Gravitational field strength
2
Q
Work done
A
Force x Distance
3
Q
Force applied to a spring
A
Spring constant x Extension
4
Q
Moment of a force
A
Force x Distance
5
Q
Pressure
A
Force / Area
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 (J)
A
0.5 x Mass x (speed)^2
11
Q
GPE
A
Mass × Gravitational field strength × height
12
Q
Power
A
Energy transferred / Time or Work done / Time
13
Q
Efficiency
A
Useful (Power / Energy) output / Total power input
14
Q
Wave speed
A
Frequency x Wavelength
15
Q
Charge flow
A
Current x Time
16
Q
Potential difference
A
Current x Resistance
17
Q
Power
A
Potential difference x Current or (Current)^2 x Resistance
18
Q
Energy transferred
A
Power x Time or Charge flow x Potential difference
19
Q
Density
A
Mass / Volume
