Flaneur in the rain - iii
Classical Mechanics
Level
3
The only problem is: it's pouring rain!
If you want to absorb as little water as possible, how quickly should you run across the road?
Assumptions
- Approximate yourself as a shape with a vertical cross section of \(A_\text{head}\), and horizontal cross section \(A_\text{body} \).
- The rain falls at terminal velocity \(v_\text{rain}\)
- All the rain that hits your body is absorbed.
- The width of the road is \(d\).
by
Josh Silverman