how fast is a ball going when it hits the ground after being dropped from a height of 16m the acceleration of gravity is 9.8

17.7 m/s

Explanation:

Given:

y₀ = 0 m

y = 16 m

v₀ = 0 m/s

a = 9.8 m/s²

Find: v

v² = v₀² + 2a (y - y₀)

v² = (0 m/s) ² + 2 (9.8 m/s²) (16 m - 0 m)

v = 17.7 m/s

The ball is moving at a speed of 17.7 m/s when it hits the ground.