Answer:
The height of the classroom can be determined using the equation:
height = (1/2) * g * t^2
Where:
g = the acceleration due to gravity (approximately 9.8 m/s^2 on Earth)
t = the time it takes for the penny to fall (0.8 seconds)
Plugging in the known values, we get:
height = (1/2) * 9.8 m/s^2 * (0.8 s)^2
height = 3.072 m
So the ceilings are approximately 3.072 meters tall.
Step-by-step explanation: