Equations Flashcards
1
Q
Weight
A
Mass x gravitational field strength
2
Q
Work Done
A
Force x distance (along the line of action of the force)
3
Q
Force applied to a spring
A
Spring constant x extension
4
Q
Moment of a force
A
Force x distance (normal to direction of force
5
Q
Pressure
A
Force / area of 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
10
Q
Kinetic energy
A
0.5 x mass x velocity^2
11
Q
GPE energy
A
Mass x gravitational field strength x height
12
Q
Power (1)
A
Energy transferred / time
13
Q
Power (2)
A
Work done / time
14
Q
Efficiency (1)
A
Useful output energy / total input energy
15
Q
Efficiency (2)
A
Useful power output / total power input
