M4 end of year Formulae Flashcards
1
Q
Average speed =
A
Distance moved
—————————
Time taken
2
Q
Acceleration =
A
Change in velocity
——————————
Time taken
3
Q
Area under velocity time graph =
A
Distance moved
4
Q
(unbalanced) Force =
A
Mass x acceleration
5
Q
Weight =
A
Mass x gravitational field strength
6
Q
Density =
A
Mass
———-
Volume
7
Q
Pressure =
A
Force
———
Area
8
Q
Charge =
A
Current x time
9
Q
Voltage =
A
Current x resistance
10
Q
Unit for resistance
A
Ohm
11
Q
Unit for charge
A
Coulombs
12
Q
Unit for pressure
A
Pascals
13
Q
Unit for acceleration
A
M/s 2
14
Q
Efficiency equation =
A
Useful energy
———————
Total energy
15
Q
Unit for energy
A
Joules
