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Adding Vectors at Right Angles
Instructor: Ms. Chase
Are You Prepared?
• Reference tables http://www.ncpublicschools.org/docs/accountability/testing/eoc/Physics/physicsreferencetable.pdf
• Pencil• Paper• Online calculator (if needed)
http://www.ecalc.com/
If vectors are at right angles (90)–move the vectors and place them
head to tail –draw resultant from tail of the first to
head of the last–use Pythagorean theorem to find
resultant–use tan = opposite/adjacent to find
direction
Demonstration
Vector addition at right angles is similar to finding the displacement:
http://www.youtube.com/watch?v=gVujFPpiLG0
Practice
Let’s do some practice problems…
Homework
Print off the “Vectors at right angles” worksheet, complete and bring with you to the next lesson.
Physics
is
fun!
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