2. are values that together determine a unique position in space.
coordinates
magnitude
displacement
scalar

this allows people to make the best decision or pursue the best option. when alternatives are weighed using their advantages and disadvantages, the option whose disadvantages outweigh the advantages (based on a qualitative or quantitative analysis) are shunned while those whose advantages outweigh their disadvantages are pursued.  

what is the speed of a softball that travels 20m in 2secs

speed = 20/2 = 10 m/s

the area between the graph and the t axis