Physics Flashcards

1
Q

What is Upthrust

A

Upthrust is a force that helps objects float

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2
Q

What does a weight of an object depend on?

A

Mass

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3
Q

What does mass measure and what does it not have?

A

Mass measures the amount of matter in something and does not have a direction

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4
Q

Is displacement a vector or scalar quantity?

A

Vector quantity

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5
Q

What is the displacement?

A

The distance covered in a straight line and has a direction.

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6
Q

What are vector quantities?

A

Quantities with both size and direction

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7
Q

What quantity are forces?

A

Vector quantities

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8
Q

What does speed tell you about an object?

A

How fast it moves in a certain time

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9
Q

What does speed tell you about an object?

A

How far it moves in a certain time

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10
Q

What is velocity?

A

Speed in a particular direction

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11
Q

What is acceleration?

A

Acceleration is a measure of how fast velocity is changing

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12
Q

What is momentum?

A

Momentum is a combination of mass and velocity

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13
Q

What are scalar quantities?

A

Quantities that do nit have a direction

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14
Q

Give three examples of scalar quantities

A
Distance
Speed
Energy
Time
Frequency
Temperature
Speed
Volume
Charge
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15
Q

What is the average speed limit on a motorway? {meters per second}

A

31 m/s

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16
Q

What is the average speed of a walking person? {meters per second}

A

1.4 m/s

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17
Q

What is the average speed of a cyclist? {meters per second}

A

6 m/s

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18
Q

What is the average speed of an aeroplane? {meters per second}

A

230 m/s

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19
Q

What is the average speed limit in a town? {meters per second}

A

13 m/s

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20
Q

What is the average speed of a commuter train? {meters per second}

A

55 m/s

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21
Q

What is the average speed of sound in air? {meters per second}

A

330 m/s

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22
Q

What is the SI standard unit for measuring speed?

A

Meters per second {m/s}

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23
Q

What is the equation for working out speed?

A

Speed = distance / time

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24
Q

What is the equation for working out distance?

A

Distance = speed X time

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25
Q

What is the equation for working out time?

A

Time = distance / speed

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26
Q

What can a distance/time graph never have?

A

A lone going in a downwards direction

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27
Q

What does a displacement/time graph represent?

A

The distance from a specific place

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28
Q

What is displacement?

A

Displacement is the distance you are in a straight line away from where you started

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29
Q

What is acceleration?

A

Acceleration is a change in velocity over a time period

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30
Q

What type of quantity is acceleration?

A

A vector quantity

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31
Q

What are the units for acceleration and how do we write it?

A

Meters per second per second

M/s ^2

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32
Q

What is the word equation for working out acceleration?

A

Acceleration = change in velocity / time

33
Q

What is the letter equation for working out acceleration?

A

A = v-u / t

34
Q

What does v stand for in science?

A

Final velocity

35
Q

What does u stand for in science?

A

Starting velocity

36
Q

What is velocity?

A

Velocity is a speed going in a certain direction

37
Q

What is deceleration?

A

A negative acceleration / slowing down

38
Q

What is the equation to work out displacement?

A

V^2 - U^2 = 2aX

39
Q

What does X stand for in science?

A

Displacement

40
Q

What should distances always be in a graph?

A

Positive

41
Q

What is acceleration?

A

Acceleration is a measure of how fast velocity is changing

42
Q

What is momentum?

A

Momentum is a combination of mass and velocity

43
Q

What are scalar quantities?

A

Quantities that do nit have a direction

44
Q

Give three examples of scalar quantities

A
Distance
Speed
Energy
Time
Frequency
Temperature
Speed
Volume
Charge
45
Q

What is the average speed limit on a motorway? {meters per second}

A

31 m/s

46
Q

What is the average speed of a walking person? {meters per second}

A

1.4 m/s

47
Q

What is the average speed of a cyclist? {meters per second}

A

6 m/s

48
Q

What is the average speed of an aeroplane? {meters per second}

A

230 m/s

49
Q

What is the average speed limit in a town? {meters per second}

A

13 m/s

50
Q

What is the average speed of a commuter train? {meters per second}

A

55 m/s

51
Q

What is the average speed of sound in air? {meters per second}

A

330 m/s

52
Q

What is the SI standard unit for measuring speed?

A

Meters per second {m/s}

53
Q

What is the equation for working out speed?

A

Speed = distance / time

54
Q

What is the equation for working out distance?

A

Distance = speed X time

55
Q

What is the equation for working out time?

A

Time = distance / speed

56
Q

What can a distance/time graph never have?

A

A lone going in a downwards direction

57
Q

What does a displacement/time graph represent?

A

The distance from a specific place

58
Q

What is displacement?

A

Displacement is the distance you are in a straight line away from where you started

59
Q

What is acceleration?

A

Acceleration is a change in velocity over a time period

60
Q

What type of quantity is acceleration?

A

A vector quantity

61
Q

What are the units for acceleration and how do we write it?

A

Meters per second per second

M/s ^2

62
Q

What is the word equation for working out acceleration?

A

Acceleration = change in velocity / time

63
Q

What is the letter equation for working out acceleration?

A

A = v-u / t

64
Q

What does v stand for in science?

A

Final velocity

65
Q

What does u stand for in science?

A

Starting velocity

66
Q

What is velocity?

A

Velocity is a speed going in a certain direction

67
Q

What is deceleration?

A

A negative acceleration / slowing down

68
Q

Can you get a negative velocity?

A

Yes

69
Q

What does a velocity-time graph tell you?

A

How the velocity of an object changes over time

70
Q

What two things can we work out using a velocity-time graph?

A

Distance and acceleration

71
Q

In a displacement-time graph what does the gradient tell us?

A

Velocity

72
Q

In a velocity time graph what does the gradient tell us?

A

Acceleration

73
Q

What is the equation to work our speed?

A

Speed = distance / time

74
Q

What is the equation to work out density?

A

Density = mass / volume

75
Q

What is the equation to work out pressure?

A

Pressure = force / area

76
Q

What is the equation to work out area?

A

Area = force / pressure

77
Q

What button on a calculator do you press to work out time things?

A

*’ “

78
Q

What’s an easy way to work out weight on earth?

A

Mass x 10

79
Q

What is velocity?

A

Velocity is speed in a given direction