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1

Distance

The measure of length between objects or points without regard for direction.

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2

Displacement

The change in position of an object.

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3

Vector

A quantity that has direction as well as magnitude.

Example: Displacement, Velocity and Acceleration

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4

Scalar

Quantities that have no direction associated with them.

Example: Distance and Speed

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5

Resultant Vector

The single vector that represents the sum of two or more individual vectors.

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6

Speed

The magnitude of the change of its position per unit of time.

Aka a positive number with units.

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7

Velocity

The magnitude of how fast an object is moving and the direction in which itâs moving.

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8

Acceleration

How rapidly the velocity of an object is changing.

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9

Distance Formula

Distance= Speed x Time

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10

Displacement Formula

Îx= x_{2}-x_{1}

Displacement= Final - Initial

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11

Speed Formula

Speed= Distance Traveled/Time Elapsed

s= d/t

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12

Velocity Formula

v= Îx / Ît

Velocity= Displacement / Time Elapsed

*Average speed is not necessarily equal to the magnitude of the average velocity

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13

Acceleration Formula

a= Îv / Ît

Acceleration= Change in Velocity / Time Elapsed

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14

Positive/Negative Acceleration

Positive= right

Negative= left

The acceleration vector (orange) points to the left because the car slows down as it moves to the right.

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15

Positive/Negative Displacement

Positive Displacement= Right

Example: Îx= 30.0m - 10.0m = 20.0m

Negative Displacement= Left

Example: Îx= 10,0m - 30.0m= -20.0m

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16

Positive/Negative Velocity

The average velocity is positive for an object moving to the right along the *x* axis and negative when the object moves to the left.

**The direction of the average velocity is always the same as the direction of the displacement.*

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