Question

A ball is thrown straight down from the top of a building at a velocity of 16ft/s. The building is 480 feet tall, and the acceleration due to gravity is 32ft/s^2

A. 6 seconds
B. 5 seconds
C. 10 seconds
D. 15 seconds

Answer 1

The ball takes approximately 5.5 seconds to reach the ground.

Step-by-step explanation:

The time it takes for the ball to reach the ground can be found using the equation:

t = sqrt(2h/g)

where t is the time, h is the height of the building, and g is the acceleration due to gravity.

Substituting the given values, we get:

t = sqrt(2*480ft/32ft/s^2) = sqrt(960/32) = sqrt(30) seconds = 5.5 seconds

Therefore, the ball takes approximately 5.5 seconds to reach the ground.