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Combined Sciences > Physics > Flashcards

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
What is the equation for working out time?
Time = distance / speed
26
What can a distance/time graph never have?
A lone going in a downwards direction
27
What does a displacement/time graph represent?
The distance from a specific place
28
What is displacement?
Displacement is the distance you are in a straight line away from where you started
29
What is acceleration?
Acceleration is a change in velocity over a time period
30
What type of quantity is acceleration?
A vector quantity
31
What are the units for acceleration and how do we write it?
Meters per second per second | M/s ^2
32
What is the word equation for working out acceleration?
Acceleration = change in velocity / time
33
What is the letter equation for working out acceleration?
A = v-u / t
34
What does v stand for in science?
Final velocity
35
What does u stand for in science?
Starting velocity
36
What is velocity?
Velocity is a speed going in a certain direction
37
What is deceleration?
A negative acceleration / slowing down
38
What is the equation to work out displacement?
V^2 - U^2 = 2aX
39
What does X stand for in science?
Displacement
40
What should distances always be in a graph?
Positive
41
What is acceleration?
Acceleration is a measure of how fast velocity is changing
42
What is momentum?
Momentum is a combination of mass and velocity
43
What are scalar quantities?
Quantities that do nit have a direction
44
Give three examples of scalar quantities
``` Distance Speed Energy Time Frequency Temperature Speed Volume Charge ```
45
What is the average speed limit on a motorway? {meters per second}
31 m/s
46
What is the average speed of a walking person? {meters per second}
1.4 m/s
47
What is the average speed of a cyclist? {meters per second}
6 m/s
48
What is the average speed of an aeroplane? {meters per second}
230 m/s
49
What is the average speed limit in a town? {meters per second}
13 m/s
50
What is the average speed of a commuter train? {meters per second}
55 m/s
51
What is the average speed of sound in air? {meters per second}
330 m/s
52
What is the SI standard unit for measuring speed?
Meters per second {m/s}
53
What is the equation for working out speed?
Speed = distance / time
54
What is the equation for working out distance?
Distance = speed X time
55
What is the equation for working out time?
Time = distance / speed
56
What can a distance/time graph never have?
A lone going in a downwards direction
57
What does a displacement/time graph represent?
The distance from a specific place
58
What is displacement?
Displacement is the distance you are in a straight line away from where you started
59
What is acceleration?
Acceleration is a change in velocity over a time period
60
What type of quantity is acceleration?
A vector quantity
61
What are the units for acceleration and how do we write it?
Meters per second per second | M/s ^2
62
What is the word equation for working out acceleration?
Acceleration = change in velocity / time
63
What is the letter equation for working out acceleration?
A = v-u / t
64
What does v stand for in science?
Final velocity
65
What does u stand for in science?
Starting velocity
66
What is velocity?
Velocity is a speed going in a certain direction
67
What is deceleration?
A negative acceleration / slowing down
68
Can you get a negative velocity?
Yes
69
What does a velocity-time graph tell you?
How the velocity of an object changes over time
70
What two things can we work out using a velocity-time graph?
Distance and acceleration
71
In a displacement-time graph what does the gradient tell us?
Velocity
72
In a velocity time graph what does the gradient tell us?
Acceleration
73
What is the equation to work our speed?
Speed = distance / time
74
What is the equation to work out density?
Density = mass / volume
75
What is the equation to work out pressure?
Pressure = force / area
76
What is the equation to work out area?
Area = force / pressure
77
What button on a calculator do you press to work out time things?
*' "
78
What's an easy way to work out weight on earth?
Mass x 10
79
What is velocity?
Velocity is speed in a given direction

Combined Sciences (4 decks)

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