Scalar and Vector Quantities

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  • Created by: Jane
  • Created on: 07-04-13 20:48
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Scalars + Vectors:
A scalar quantity has size (magnitude) only
A vector quantity has size (magnitude) and direction
Example scalar and vector quantities include:
Scalar Vector
Length Displacement
Speed Velocity
Mass Momentum
Time Acceleration
Energy Force
Vector quantities can be represented by arrows and by drawing vector diagrams
For vectors acting along the same line we take one direction as positive and one as negative
Resolving Vectors:
Any single vector may be represented by a horizontal and vertical component. We can then add the
horizontal vectors to find the resultant horizontal and the vertical components to find the resultant
vertical. The final resultant is the addition of these two components, the direction of the resultant
vector is the angle between a component of the vector and the resultant vector.


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