Scalars and vectors :
A scalar: is a quantity that has magnitude only. Mass, time, speed,distance, pressure, Temperature and volume are all examples of scalarquantities .
Note : Magnitude – A numerical value with units.
A vector : is a quantity that has a magnitude and a direction. Oneexample of a vector is velocity. The velocity of an object is determinedby the magnitude (speed) and direction of travel. Other examples ofvectors are force, displacement and acceleration .
Note : Vectors are typically illustrated by drawing an ARROW abovethe symbol. The arrow is used to convey direction and magnitude.