Physics homework -- guy runs 28.5m in 11.5s,

1. Dec 18, 2014

daniel20152015

1. The problem statement, all variables and given/known data
I have a problem where a guy runs 28.5m in 11.5s, waits 45s, then runs back to the starting point in 22s. What's the average velocity?

2. Relevant equations

3. The attempt at a solution
Would it be zero because the displacement is zero or would I calculate the 57 total meters ran divided by the overall time?

2. Dec 18, 2014

Staff: Mentor

Welcome to PF!

What is the definition of average velocity? Its based on displacement and time so what is it?

3. Dec 19, 2014

Satvik Pandey

Hi Daniel! Welcome to physics forum!:)
The question asks to find the average velocity not average speed. Your answer is correct. As displacement is zero so average velocity is zero. But average speed is not zero.