# Mechanics module

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• Created by: Georgina
• Created on: 20-02-14 18:44
Scalar
A quantity that has magnitude and not direction
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Vector
A quantity that has magnitude and direction
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Speed
is distance per unit time
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Dispalcement
is distance moved in a stated direction
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Velocity
is displacement per unit time
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Instantaneous speed
is the speed given at any instant of time, is the gradient of the graph of displacement against time at that instant
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Acceleration
is the rate of change of velocity
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area
a physical quantity representing the size of part of a surface, measured in metres squared
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average speed
a measure of the total distance traveled in unit time
9 of 10
free fall
when an object is accelerating under gravity (9.81)
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## Other cards in this set

### Card 2

#### Front

A quantity that has magnitude and direction

Vector

### Card 3

#### Front

is distance per unit time

### Card 4

#### Front

is distance moved in a stated direction

### Card 5

#### Front

is displacement per unit time