Equations Flashcards
1
Q
Weight =
A
mass x gravitational field strength
2
Q
Force applied to a spring =
A
spring constant x extension
3
Q
Acceleration =
A
change in velocity / time
4
Q
Momentum =
A
mass x velocity
5
Q
GPE =
A
mgh
6
Q
Power =
A
- work done / time
- energy transferred / time
- p.d x current
- current2 x resistance
7
Q
Efficiency (power output) =
A
useful power output / total power output
8
Q
Charge flow =
A
current x time
9
Q
Energy transferred =
A
- power x time
2. charge flow x p.d
10
Q
Density =
A
mass / volume
11
Q
Work done =
A
force x distance (along the line of action of the force)
12
Q
Distance travelled =
A
speed x time
13
Q
Resultant force =
A
mass x acceleration
14
Q
Kinetic energy =
A
0.5 x mass x (speed)2
15
Q
Efficiency (energy transfer) =
A
useful output energy transfer / total input energy transfer
