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Vectors Scalars 1
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Vectors Scalars 1

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Vectors Scalars 1 Vectors Scalars 1 Presentation Transcript

  • Scalar Quantities
    • Describes magnitude
    • Does not depend on direction
    • Is not changed by the coordinate system
  • Scalars
    • All of these examples have one unit and do not have a direction
    • Mass (78 g)
    • Area/Volume (68m^2)
    • Temperature (12°C)
    • Energy (100.3 J)
    • Time (30 minutes)
    • Money ($56)
  • Vectors
    • A quantity that describes both magnitude and direction
    • Can be drawn as an arrow where the length represents the magnitude and the direction of the arrow represents the direction of the vector
    Velocity and distance are examples of vectors
  • Triangle Method
    • Move the 2 nd vector so it starts at the end of the first vector
    • The resultant vector will start at the beginning of the 1 st vector and stop at the end of the 2 nd vector
  • Adding Parallel Vectors
    • With Vectors pointing in same direction just simply add the numbers and use the same direction.
    • With vectors pointing in opposite directions add the numbers then take the direction of the vector with the largest absolute value.
  • Parallelogram
    • Move the vectors so that they start at the same point
    • The resultant vector will be the diagonal of the parallelogram formed by the two vectors. It will start at the same vertex as the two vectors.
  • Speed vs. Velocity
    • Speed describes the rate of change in distance
    • Velocity describes a rate of change in displacement
  • Displacement vs. Distance
    • Displacement is a vector that describes the change in position if the object from starting to ending point.
    • Distance is a scalar which describes “how much ground” the object has covered during motion.