# Mach Number

1. Dec 3, 2006

### soulja101

1. The problem statement, all variables and given/known data
What is the mach number if an aircraft traveling at sea level at 0 degrees with a speed of A)1140km/h b)900.0km/ the answers are 0.995 abd 0.753 in order. I Cant get those.

2. Relevant equations
mach number=speed of object/speed of sound

3. The attempt at a solution

322meters per second/316meters per second

1.02meters per second and i got a different number than the answer for number 2

2. Dec 3, 2006

for the first it should be: $$\frac{316. 6 \frac{m}{s}}{ 340.29 \frac{m}{s}}$$

3. Dec 3, 2006

### soulja101

where did u get 340 from

4. Dec 3, 2006