This isn't a homework question. My friend stumbled upon his textbook that stated since the circumference of the globe is 2*pi*r, the velocity of someone who "ran all the way around" would be v = (2*pi*r)/t.(adsbygoogle = window.adsbygoogle || []).push({});

However, isn't the displacement zero? And velocity = displacement/time?

so is this a textbook typo, or is there another point I'm missing? xD

**Physics Forums | Science Articles, Homework Help, Discussion**

Dismiss Notice

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# If you travel around the world, what would the velocity be?

**Physics Forums | Science Articles, Homework Help, Discussion**