Figure 9 is a diagram showing a rocket that is sent into space to try and change the path of a small asteroid - Edexcel - GCSE Physics Combined Science - Question 6 - 2020 - Paper 1

To find the momentum ($p$) of the rocket, we can use the formula:

$p = m \times v$

Here, the mass ($m$) is 5.5 × 10^6 kg and the velocity ($v$) is 14 km/s. First, we need to convert the velocity to m/s:

$14 \text{ km/s} = 14,000 \text{ m/s}$

Now, substituting the values:

$p = 5.5 \times 10^6 \text{ kg} \times 14,000 \text{ m/s} = 7.7 \times 10^{10} \text{ kg m/s}$

Therefore, the correct answer is: A. 7.7 × 10^10 kg m/s.