Does wagon have a long vowel sound?

No, "wagon" does not have a long vowel sound. The vowel sound in "wagon" is a short "a" sound.

Here's why:

* The "a" is followed by a consonant ("g"). This usually indicates a short vowel sound.

* The "o" is silent. It doesn't contribute to the vowel sound.

Therefore, the vowel sound in "wagon" is similar to the "a" in "cat" or "hat."