Pleas help me work on this

What is the measure of a change in an objects velocity?

The chart shows daniela’s run through her race. what is her velocity? 1.5 m/s 2 m/s 2.5 m/s 5 m/s

Five structural isomers have the formula c6h14. where needed, draw the structure and give the iupac name of all five isomers.