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A-Level Physics OCR > Module 2 Chapter 2 Nature of Quantities > Flashcards

Module 2 Chapter 2 Nature of Quantities Flashcards

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1
Q

Examples of Scalar Quantities

A

Mass, Density, Volume, Distance, Speed, Energy, Power

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2
Q

Examples of Vector Quantities

A

Weight, Pressure, Impulse, Displacement, Velocity, Acceleration, Momentum

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3
Q

Mass, Scalar or Vector?

+ unit & definition

A

Scalar
Unit: kg
Definition: The matter content of a body

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4
Q

Density, Scalar or Vector?

+ unit & definition

A

Scalar
Unit: kg m-3
Definition: Mass per unit volume

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5
Q

Volume, Scalar or Vector?

+ unit & definition

A

Scalar
Unit: m3
Definition: Three-dimensional space occupied by a body

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6
Q

Distance, Scalar or Vector?

+ unit & definition

A

Scalar
Unit: m
Definition: Length from one point to another

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7
Q

Speed, Scalar or Vector?

+ unit & definition

A

Scalar
Unit: m s-1
Definition: Distance travelled per unit time

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8
Q

Energy, Scalar or Vector?

+ unit & definition

A

Scalar
Unit: J
Definition: Work done

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9
Q

Power, Scalar or Vector?

+ unit & definition

A

Scalar
Unit: W or J s-1
Definition: Energy converted or work done per unit time

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10
Q

Weight, Scalar or Vector?

+ unit & definition

A

Vector
Unit: N
Definition: Force, acting downwards through a body, due to gravity

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11
Q

Pressure, Scalar or Vector?

+ unit & definition

A

Vector
Unit: Pa or N m-2
Definition: Force per unit area

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12
Q

Impulse, Scalar or Vector?

+ unit & definition

A

Vector
Unit: kg m s-1
Definition: Force * Time

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13
Q

Displacement, Scalar or Vector?

+ unit & definition

A

Vector
Unit: m
Definition: Distance from a specific point in a particular direction

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14
Q

Velocity, Scalar or Vector?

+ unit & definition

A

Vector
Unit: m s-1
Definition: Displacement per unit time

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15
Q

Acceleration, Scalar or Vector?

+ unit & definition

A

Vector
Unit: m s-2
Definition: Change in velocity per unit time

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16
Q

Momentum, Scalar or Vector?

+ unit & definition

A

Vector
Unit: kg m s-1
Definition: Mass * Velocity

17
Q

Scalar Unit

A

Has just magnitude

18
Q

Vector Unit

A

Has Magnitude and Direction

19
Q

Scalar Arithmetic

A

Simply add or subtract the values as appropriate, remembering to convert all values to the same units.

20
Q

Vector Arithmetic

A

With vectors, direction matters. You may either add and subtract them if the values are parallel, use Pythagoras if the values are perpendicular or use trigonometry in other instances.

21
Q

Acceleration due to gravity

A

9.81 m s-1

A-Level Physics OCR (13 decks)

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