What is her average speed over the entire trip? What is her average velocity over the entire trip?

Question

5934 views around the world

You can reuse this answer
Creative Commons License

Answer 1 · 2018-02-09T08:59:20

Let the distance between A B be $x$ m.

So time required to travel from A toB @ $5.2$ m/s will be $=x/5.2$ s

Similarly time required to travel from B to A @ $2.9$ m/s will be $=x/2.9$ s

Hence the average speed

$="total distance traveled"/"total time"$

$=(2x)/(x/5.2+x/2.9)$

$=(2*2.9*5.2)/8.1=3.721$ m/s

Net displacement during total time being zero the average velocity will be zero