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Vectors
My Brother is a Pilot
• He takes off from
Philadelphia International
Airport
• He flies 20 miles North
• He then flies 10 miles at a
heading 80° East of North
• Result = Resultant =
23.9 miles 24° East of North
A Vector  Magnitude and Direction
• Displacement Vector
• Vector A equals
Vector A´ (A prime)
• Vector B equals
the negative of
Vector A
Adding Vectors
Head to Tail
Parallelogram
Method
A+B=B+A
Vector Addition
Commutes
Adding Vectors
• The Sum of Two
Parallel Vectors
• The Sum of Two
Antiparallel Vectors
• Two Add Three
Vectors
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