1. Identify the formula for speed:
v = \frac{d}{t}
2. Substitute the given values into the formula:
v = \frac{9000}{12.12}
3. Perform the division:
v = 742.5743 \text{ m/s}
4. Round the answer to two decimal places:
v \approx 742.57 \text{ m/s}
Therefore, the speed of the rocket is approximately \( 742.57 \text{ m/s} \).