Aball is dropped from the roof of a building. if it takes 2.6s to reach the ground how tall is the building

33.2 m

Explanation:

The motion of the ball is a uniformly accelerated motion, with constant acceleration g = 9.81 m/s^2 (acceleration due to gravity).

The total displacement of the ball is given by

where

t = 2.6 s is the time the ball took to reach the ground

Substituting t and g into the formula, we find the heigth of the building

c. rb

explanation:

the atomic radius of a chemical element is a measure of the size of its atoms, usually the mean or typical distance from the center of the nucleus to the boundary of the surrounding shells of electrons.

your answer is c! hope this : )