Flashcards in Equations Deck (32):

0

## Speed =

### Distance travelled \ time taken

1

## Velocity =

### Increase in displacement / time taken

2

## Acceleration =

### Change in velocity / time taken

3

## Force is proportional to what ?

### Acceleration

4

## Acceleration is inversely proportional to ??

### Mass

5

## Force (N) =

### Mass (kg) x acceleration

6

## Weight =

### Mass of object (kg) x acceleration due to gravity

7

## Momentum =

### Mass (kg) x velocity

8

## Force =

### Change in momentum / time taken

9

## Increase in momentum =

### Force x time

10

## Momentum before collision =

### Momentum after collision

11

## Moment of force (Nm) =

### Force (N) x perpendicular force from pivot

12

## Orbital speed =

### 2 x pi x orbital radius / time period

13

## Power (watts) =

### Current (amps) x voltage

14

## Energy converted (j) =

### Power (watts) x time (seconds)

15

## Charge (coulombs) =

### Current (amps) x time (seconds)

16

## Voltage =

### Current (amps) x resistance (ohms)

17

## Frequency (hertz) =

### 1 / time period (seconds)

18

## Wave speed (m/s) =

### Frequency (hertz) x wavelength (m)

19

## Refractive index =

### Sine (incidence angle) / sine (refractive index)

20

## Sine (critical angle) =

### 1 / refractive index

21

## Work done (joules) =

### Force (N) x distance (M)

22

## Change in GPE (joules) =

### Mass (kg) x gravity x distance raised against gravitational force (metres)

23

## Kinetic energy =

### 1/2 x mass (kg) x speed (m/s)

24

## Power (watts) =

### Work done (joules) / time taken (s)

25

##
Gain in GPE =

### Gain in GPE = gain of kinetic energy before impact

26

## Density =

### Mass / volume

27

## Pressure (pascals) =

### Force (N) / area (m/2)

28

## Pressure difference (pascals) =

### Height (M) x density x gravity

29

## Pressure 1 x volume 1=

### Pressure 2 x volume 2

30

## Pressure 1 / temperature 1 =

### Pressure 2 / temperature 2

31