Release an object from a distance of 2 meters. If the object reaches the ground at a speed of 20 m / s. Find the acceleration of the object?

Applicate formula:

Vf² = Vo² + 2ad

Clearing a:

a = (Vf² - Vo²) / 2d

Replacing:

a = ((20 m/s)² - 0 m/s)²) / 2 * 2 m

a = 400 m²/s² / 4 m²

a = 100 m/s²

The aceleration is 100 m/s²

there are no contact forces mentioned on the list of choices that you've provided.