# Topic 1.1 - Motion

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What is a scalar?
A scalar is a quantity that has a magnitude only.
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What is a vector?
A vector is a quantity with a magnitude and a sense of direction.
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What can be represented by a distance-time graph?
How far an object, moving in a straight line, is from a certain point
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How can the speed of an object be determined from a distance-time graph?
To find the speed of an object from a distance-time graph, the gradient of the line needs to be determined.
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What is the velocity of an object?
Velocity is the speed of an object in a given direction
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What is the equation for velocity?
Velocity = Displacement ÷ Time Taken
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What is the equation for acceleration?
Acceleration = Change in Velocity ÷ Time Taken
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How can the acceleration of an object be calculated?
The acceleration of an object can be calculated by determining the gradient of the line on a velocity-time graph
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How can distance travelled by an object be determined?
The distance travelled by an object can be determined by the area underneath the line of a velocity-time graph
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## Other cards in this set

### Card 2

#### Front

What is a vector?

#### Back

A vector is a quantity with a magnitude and a sense of direction.

### Card 3

#### Front

What can be represented by a distance-time graph?

### Card 4

#### Front

How can the speed of an object be determined from a distance-time graph?

### Card 5

#### Front

What is the velocity of an object?