1.5 form 4 d_scalar and vectors
Post on 21-Jul-2015
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A scalar quantity is a quantity that has magnitude only.
Examples include:Mass
Temperature
Energy
Speed
Distance
Pressure
Scalar quantities are added additively e.g.
5kg + 10kg = 15kg
25J + 30J = 55J
8m/s + 10m/s = 18m/s
A vector quantity has both magnitude and direction.
Examples include:
Force
Velocity
Weight
Electric current
5
One way to represent a vector is by an arrow and the length of the vector drawn to scale, as the magnitude
Simple vector addition by graphical method
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