CP1 Flashcards

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1
Q

Relation of:
-Speed
-Distance
-Time

A

Speed = Distance/Time

s = d/t

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2
Q

Speed measurement

A

m/s (metres per second)

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3
Q

Distance measurement

A

m (metres)

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4
Q

Time measurement

A

s (seconds)

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5
Q

Relation of:
- Acceleration
-Final velocity
-Initial velocity
-Time

A

Acceleration = final velocity - initial velocity/time

a=v-u/t

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6
Q

Acceleration measurement

A

m/s^2 (metres per second squared)

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7
Q

Final velocity measurement

A

m/s (metres per second)

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8
Q

Initial velocity measurement

A

m/s (metres per second)

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9
Q

Relation of:
-Weight
-Mass
-Gravitational Field Strength (GFS)

A

Weight = Mass x GFS

w = mg

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10
Q

Weight measurement

A

N (Newtons)

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11
Q

Mass measurement

A

kg (kilograms)

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12
Q

GFS measurement

A

N/kg (Newtons per kilogram)

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13
Q

What is the GFS on Earth?

A

10N/kg

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14
Q

Relation of:
-Acceleration
-Final velocity
-Initial velocity
-Distance

A

Final velocity squared - Initial velocity squared = 2 x acceleration x distance

v^2 - u^2 = 2ax

ONLY IN THIS EQUATION IS DISTANCE REPRESENTED BY X.

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15
Q

What is a scalar quantity?

A

A scalar quantity has a size but no direction

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16
Q

Give 4 examples of scalar quantities

A

-Speed
-Mass
-Distance
-Time

17
Q

Give 4 examples of vector quantities

A

-Velocity
-Weight
-Displacement
-Acceleration
-Momentum

17
Q

What is a vector quantity?

A

A vector quantity has size and direction.
(The direction can be indicated in different ways.)

18
Q

What is the vector quantity of speed?

A

Velocity

19
Q

What is the vector quantity of mass?

A

Weight

20
Q

What is displacement?

A

Displacement is the distance covered in a straight line and includes a direction.

20
Q

What is the vector quantity of distance?

A

Displacement

20
Q

What is acceleration?

A

A measure of how fast velocity is changing.

21
Q

What is momentum?

A

A combination of mass and velocity.

22
Q

Is momentum a scalar or vector quantity?

A

Momentum is a vector quantity.

23
Q

What is an average speed?

A

Measures the speed over an entire journey, even though it may have changed.

24
Q

What is an instantaneous speed?

A

The speed at a particular point of a journey.

25
Q

What is the average walking speed?

A

1-2m/s

26
Q

What is the acceleration due to gravity?

A

10m/s^2

27
Q

How do you find distance on a velocity/time graph?

A

You can find the distance by looking at the area under the line on the graph.