Question

A runner increases her speed from 3.1 m/s to 3.5 m/s during the last 15 seconds of her run what was her acceleration during her big push to the finish?

Answer 1

a=v-u/15
a=3.5-3.1/15
a=0.4/15
a=0.02666666
.:a =0.03m/s2 (2 represents a square root)