# P2.1.2 Velocity and Acceleration

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• Created on: 04-05-14 13:52
What is the difference between speed and velocity?
Velocity is speed in a given direction.
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What are scalars?
Scalars are quantities that are fully described by a numerical value alone.
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What are vectors?
Vectors are quantities that are fully described by both a numerical value and a direction.
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What is acceleration?
Acceleration is the change in velocity in a second.
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What is the unit of acceleration?
m/s
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How can we calculate the acceleration of an object?
Acceleration = change in velocity - time taken
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What is deceleration?
Deceleration is the change of velocity per second when an object slows down.
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## Other cards in this set

### Card 2

#### Front

What are scalars?

#### Back

Scalars are quantities that are fully described by a numerical value alone.

### Card 3

#### Front

What are vectors?

### Card 4

#### Front

What is acceleration?

### Card 5

#### Front

What is the unit of acceleration?