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VECTORS!

VECTORS!. Oohhhh….ahhhhh…. Velocity, Force, and Acceleration. Velocity, force, and acceleration require two things to be complete: Magnitude (size) Direction These quantities are fittingly called vector quantities. Mass, Volume, and Speed.

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VECTORS!

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  1. VECTORS! Oohhhh….ahhhhh….

  2. Velocity, Force, and Acceleration • Velocity, force, and acceleration require two things to be complete: • Magnitude (size) • Direction • These quantities are fittingly called vector quantities.

  3. Mass, Volume, and Speed • These are all measurements of magnitude (size), but not _______. • They are all scalar quantities. direction size size + direction

  4. Vector, oh Vector • Pictures are often better than words – so we use vectors. • Once again…a vector is a representation of any vector quantity (velocity, force, acceleration) by an arrow. • It shows direction (which way) • It shows magnitude (how much)

  5. Vectors are used when adding and subtracting velocities • If the vectors are in line it’s easy… 5 N + 10 N = 15 N 10 N - 5 N = 5 N

  6. Resultants • If the vectors are not in line, it gets slightly tricky. • Bring the tail of one vector to the tip of the other • From the origin, draw a diagonal line – this is the resultant, or result of the two forces coming together. It’s motion in two dimensions baby!

  7. Example… • Forces: Connect the tip to tail • Diagonal = Resultant

  8. Example 2… • Which way will he go? Wind Speed Plane Speed Plane’s Direction + Speed

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