# Dimensional analysis, I'm kinda lost

1. Sep 25, 2009

### coasterguy

1. The problem statement, all variables and given/known data

3. The attempt at a solution

I'm really new to this, and the professor didn't explain it well. IDK if I did that right so far, but I'm not sure what to do next. What does it mean by the units of .00256? Thanks

2. Sep 25, 2009

### djeitnstine

What is the full definition of $$C_d$$ ?