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Forces and their interactions > Scalar and Vector Quantities > Flashcards

Scalar and Vector Quantities Flashcards

1
Q

What is a scalar quantity

A

A quantity with magnitude but no direction

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2
Q

What does magnitude mean?

A

Size

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3
Q

What is a vector quality?

A

A quantity with both size and direction

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4
Q

Is speed a scalar or vector quantity?

A

Scalar

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5
Q

Why is speed a scalar quantity?

A

It only has magnitude (size)
m/s

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6
Q

Is velocity a scalar or vector quantity?

A

Vector

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7
Q

Why is velocity a vector quantity?

A

It has both magnitude m/s and direction

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8
Q

Is mass a scalar or vector quantity?

A

Scalar

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9
Q

Why is mass a scalar quantity?

A

It has magnitude (kg) but no direction

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10
Q

Is weight a scalar or vector quantity

A

Vector

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11
Q

Why is weight a vector quantity

A

It has a magnitude (force, Newtons) acting in a direction due to gravity

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12
Q

Is distance a scalar or vector quantity?

A

Scalar

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13
Q

Why is distance a scalar quantity?

A

It only has magnitude (size)

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14
Q

Is displacement a scalar or vector quantity?

A

Vector

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15
Q

Why is displacement a vector quantity?

A

It has both magnitude (m) and direction

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16
Q

Is Energy a scalar or vector quantity?

A

Scalar

17
Q

Why is energy a scalar quantity?

A

It only has magnitude (Joules)

18
Q

Is acceleration a scalar or vector quantity?

A

Vector

19
Q

Why is acceleration a vector quantity?

A

It has both magnitude and direction

20
Q

What is the definition of displacement?

A

Displacement is the distance in a given direciton from the starting point

21
Q

What do you have to make sure to include in your answers for displacement?

A

The direction

(N,E,S,W)

22
Q

If two moving objects are travelling at the same speed but different directions what does this mean for their velocity’s

A

They have different velocities

23
Q

To have the same velocity objects must be moving at the same speedand the same what?

A

Direction

24
Q

What is the difference between a scalar and vector quantity?

[2 marks]

A

A scalar quantity has only magnitude
A vector quantity has both magnitude and direction

25
Q

Give four examples of scalar quantities

A

Mass

Speed

Time

Pressure

26
Q

Give four examples of vector quantities

A

Velocity
Weight
Displacement
Momentum

27
Q

Explain why time is a scalar quantity and not a vector quantity

A

Time has magnitude but it does not have spacial direction, e.g. it cannot move backwards or to the left

Forces and their interactions (17 decks)

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