Question

A 55.0-kg lead ball is dropped from the Leaning Tower of Pisa. The tower is 55.0 m high. What is the speed of the ball after it has traveled 2.40 m downward?

Answer 1

6.86 m/s

Step-by-step explanation:

Take downward to be positive.

Given:

Δy = 2.40 m

v₀ = 0 m/s

a = 9.8 m/s²

Find: v

v² = v₀² + 2aΔy

v² = (0 m/s)² + 2 (9.8 m/s²) (2.40 m)

v = 6.86 m/s