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02 - Vectors & Displacement

# 02 - Vectors & Displacement - Vectors For next time...

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Vectors For next time: Read: 2.1 - 2.3 (velocity) Homework: Ch. 3 Problems 4, 26, 32 (due Wednesday in class) Please leave the last three rows empty!

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Vectors • Vector quantities have both magnitude and direction – displacement –ve loc i ty –fo rce • Scalar quantities have only magnitude •t em p e r a t u r e
These represent equivalent vectors:

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B A A B + = ?
A B

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Vector addition (tail to head): A B C G + A B C =
Vector addition (parallelogram method): A B C G

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Vector subtraction v f v i - = ? v i v f v
Vector subtraction v i v f - = ? v i v f v

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Vector subtraction v i v f v = ? v i v + v f
Vector subtraction fi vv v =∆ G GG i v G f v G ( ) vvv + −= G i v G

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Vector subtraction f v G i v G v G Same! () fi vv v vvv −= +− =∆ GG G GGG
Multiplication by a scalar 2 = −× CA GG changes direction . B1 5A G G A G magnitude 1.5 times greater

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Making a peanut butter sandwich Operational definition: List of steps required to produce (or measure) the concept being defined.
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02 - Vectors & Displacement - Vectors For next time...

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