Final answer:
The time signature may vary depending on the composition, but an example is provided with Mozart's Symphony No. 40 in G minor having a 4/4 time signature.
Step-by-step explanation:
The time signature of movements 2 and 8 will depend on the specific piece you are referring to, as different compositions may have different time signatures.
However, let's take an example: For instance, if we consider movements 2 and 8 of Mozart's Symphony No. 40 in G minor, the time signature is 4/4. This means there are four beats per measure, and the quarter note receives one beat. It's important to note that the time signature can vary widely among different musical compositions, so you should specify the piece you are asking about for the most accurate answer.