Flashcards in Physics Equations and Units Deck (43)

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1

## What is the equation that links mass, gravitational field strength and weight?

###
weight = mass x gravitational field strength

W = m x g

2

## What is the equation that links work done, force and distance?

###
Work done = force x distance

W = F x s

3

## What is the equation that links force applied to a spring, spring constant and the extension?

###
Force applied to a spring = spring constant x extension

F = k x e

4

## What is the equation that links distance, speed and time

###
distance = velocity x time

s = v x t

5

## What is the equation that links acceleration, chance in velocity and time taken?

###
acceleration = chance in velocity / time

a = (v-u)÷t

6

## What's the equation that links resultant force, mass and acceleration?

###
resultant force = mass x acceleration

F = m x a

7

## What's the equation that links momentum, mass and velocity? (Higher only)

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momentum = mass x velocity

p = m x v

8

## What is the equation that links kinetic energy, mass and velocity?

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kinetic energy = 0.5 x mass x (velocity)2

Ek=0.5 x m x v2

9

## What is the equation that links gravitational potential energy, mass, gravitational field strength and height?

###
gravitational potential energy = mass x gravitational field strength x height

Ep = m x g x h

10

## What is the equation that links power, energy transferred and time?

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power = energy transferred / time

P = E ÷ t

11

## What is the equation that links power, work done and time?

###
power = work done / time

P = W ÷ t

12

## What is the equation that links efficiency, useful energy transfer and total input energy transfer?

### Efficiency = useful output energy ÷ total energy input

13

## What is the equation that links efficiency, useful power output and total power input?

### efficiency = total power output ÷ total power input

14

## What is the equation that links wave speed, frequency and wavelength?

###
wave speed = frequency x wavelength

v = f x λ

15

## What is the equation that links charge flow, current and time?

###
charge flow = current x time

Q = I x t

16

## What is the equation that links potential difference, current and resistance?

###
potential difference = current x resistance

V = I x R

17

## What is the equation that links power, potential difference and current?

###
Power = potential difference x current

P = V x I

18

## What is the equation that links power, current and resistance?

###
Power = (current)2 x resistance

P = I2 x R

19

## What is the equation that links energy transferred, power and time?

###
energy transferred = power x time

E = P x t

20

## What is the equation that links energy transferred, charge flow and potential difference?

###
energy transferred = charge flow x potential difference

E = Q x V

21

## What is the equation that links density, mass and volume?

###
density = mass ÷ volume

(p = m ÷ v)

22

## What is the unit of weight?

### Newtons (N)

23

## What is the unit of mass?

### kilograms (kg)

24

## What is the unit of gravitational field strength?

### Newtons per kilogram (N/kg)

25

## What is the unit of work done?

### Joules (J)

26

## What is the unit of force?

### Newtons (N)

27

## What is the unit of distance?

### metres (m)

28

## What is the unit of velocity?

### metres per second (m/s)

29

## What is the unit of time?

### seconds (s)

30

## What is the unit of acceleration?

### metres per second2 (m/s2)

31

## What is the unit of momentum?

### Nm/s

32

## What is the unit of kinetic energy?

### Joules (J)

33

## What is the unit of gravitational energy?

### Joules (J)

34

## What is the unit of height?

### metres (m)

35

## What is the unit of power?

### Watts (W)

36

## What is the unit of wave speed?

### metres per second (m/s)

37

## What is the unit of frequency?

### Hertz (Hz)

38

## What is the unit of wavelength?

### metres (m)

39

## What is the unit of charge flow?

### Coulombs (C)

40

## What is the unit of current?

### Amperes (A)

41

## What is the unit of potential difference?

### Volts (V)

42

## What is the unit of resistance?

### Ohms (Ω)

43