Equations Flashcards
1
Q
Weight
A
Mass x gravitational field strength
2
Q
Work done
A
Force x distance
3
Q
Force applied to a 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 that surface
6
Q
Distance travelled
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 (HT)
10
Q
Kinetic energy
A
0.5 x mass x (speed)^2
11
Q
Gravitational potential energy
A
Mass x gravitational field strength
12
Q
Power
A
Energy transferred or work done
————————————————
Time
13
Q
Efficiency
A
Useful total output energy transfer
————————————————
Total input energy transfer
Or
Useful power output
——————————
Total power output
14
Q
Wave speed
A
Frequency x wavelength
15
Q
Charge flow
A
Current x time
