What type of metrical foot consists an unstressed syllable directly followed by a stressed syllabale?

The metrical foot that consists of an unstressed syllable directly followed by a stressed syllable is called an iamb.

Here's a breakdown:

* Iamb: unstressed / stressed (˘ / ˊ)

* Example: beLÓVE, aWAY, reMÉMber

Let me know if you'd like to explore other metrical feet!