Question

An apple is dropped from the top of a building and hits the ground 2 seconds later. How tall is the building?

Answer 1

Hello! :)

$\large\boxed{19.6 m}$

Use the kinematic equation below to solve for the height of the building:

$d = \frac{1}{2} at^{2}$

Where:

d = distance, or height of the building (m)

a = acceleration due to gravity (9.8 m/s²)

t = time (seconds)

Plug in the given values into the equation:

$d = \frac{1}{2} (9.8)2^{2}\\\\d = \frac{1}{2} (39.2)\\\\d = 19.6 m$