Estimate the average speed with which the hair on your head grows.

Question

Estimate the average speed with which the hair on your head grows.  Give your answer in both m/s and μm/h.  Briefly describe how you arrived at the estimate.

Answer 1

The good news is that it's the 21st century, and google is very good at what it does: https://www.google.com/?q=average%20rate%20of%20hair%20growth

Your question isn't answered yet -- google gives you an answer in inches per month, which are decidedly not the units you're looking for. You probably could get this answer for your own hair: think about how many months you usually go without a haircut and how many inches you ask them to cut off. From there, all you need to do is convert the units.