# Calculating gauge pressure in lungs to produce certain speeds

1. Jun 13, 2013

### tooperoo

1. The problem statement, all variables and given/known data
The human sneeze can reach speeds of 150km/hr. Calculate the gauge pressure in the lungs required to generate a flow with this speed at atmospheric pressure. Assume the density of the air is constant at 1.3 kg/m^3.

2. Relevant equations

3. The attempt at a solution

I tried solving to get the gauge pressure but i need the height to do this. Also, i tried working with fluid formulas that have velocity in them but i keep getting stuck due to not having all the variables.

2. Jun 13, 2013

### Basic_Physics

I would think you could use the Bernoulli equation with the speed in the lungs set to zero. After all it starts out stationary.

3. Jun 13, 2013

### tooperoo

I might give that a go bud. Thanks!