AP Physics 1 1.1-1.2

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Distance

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16 Terms

1

Distance

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

<p>The measure of length between objects or points without regard for direction.</p>
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2

Displacement

The change in position of an object.

<p>The change in position of an object.</p>
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3

Vector

A quantity that has direction as well as magnitude.

Example: Displacement, Velocity and Acceleration

<p>A quantity that has direction as well as magnitude.</p><p>Example: Displacement, Velocity and Acceleration</p>
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4

Scalar

Quantities that have no direction associated with them.

Example: Distance and Speed

<p>Quantities that have no direction associated with them. </p><p>Example: Distance and Speed</p>
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5

Resultant Vector

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

<p>The single vector that represents the sum of two or more individual vectors.</p>
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6

Speed

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

Aka a positive number with units.

<p>The magnitude of the change of its position per unit of time.</p><p>Aka a positive number with units.</p>
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7

Velocity

The magnitude of how fast an object is moving and the direction in which it’s moving.

<p>The magnitude of how fast an object is moving and the direction in which it’s moving.</p>
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8

Acceleration

How rapidly the velocity of an object is changing.

<p>How rapidly the velocity of an object is changing.</p>
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9

Distance Formula

Distance= Speed x Time

<p>Distance= Speed x Time</p>
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10

Displacement Formula

Δx= x2-x1

Displacement= Final - Initial

<p><span style="font-family: Google Sans, Roboto, Arial, sans-serif">Δ</span>x= x<sub>2</sub>-x<sub>1</sub></p><p>Displacement= Final - Initial</p>
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11

Speed Formula

Speed= Distance Traveled/Time Elapsed

s= d/t

<p>Speed= Distance Traveled/Time Elapsed</p><p>s= d/t</p>
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12

Velocity Formula

v= Δx / Δt

Velocity= Displacement / Time Elapsed

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

<p>v= <span style="font-family: Google Sans, Roboto, Arial, sans-serif">Δx / Δt</span></p><p><span style="font-family: Google Sans, Roboto, Arial, sans-serif">Velocity= Displacement / Time Elapsed</span></p><p>*Average speed is not necessarily equal to the magnitude of the average velocity</p>
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13

Acceleration Formula

a= Δv / Δt

Acceleration= Change in Velocity / Time Elapsed

<p>a= <span>Δv / Δt</span></p><p>Acceleration= Change in Velocity / Time Elapsed</p>
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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.

<p>Positive= right</p><p>Negative= left</p><p>The acceleration vector (orange) points to the left because the car slows down as it moves to the right.</p>
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15

Positive/Negative Displacement

Positive Displacement= Right

Example: Δx= 30.0m - 10.0m = 20.0m

Negative Displacement= Left

Example: Δx= 10,0m - 30.0m= -20.0m

<p>Positive Displacement= Right</p><p>Example: <span>Δx= 30.0m - 10.0m = 20.0m</span></p><p>Negative Displacement= Left</p><p>Example: <span>Δx= 10,0m - 30.0m= -20.0m</span></p>
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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.

<p>The average velocity is positive for an object moving to the right along the <em>x</em> axis and negative when the object moves to the left.</p><p>*<em>The direction of the average velocity is always the same as the direction of the displacement.</em></p>
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