Question

Consider a worker on the roof of a 3rd-story building who drops a tool from a height of 30 feet. To determine how long it would take for the tool to hit the ground, you can use a mathematical equation. Which of the following equations is a correct step in this problem?

A. r² = 8/15
B. 3 = -16t² + 30
C. 30 = -16t²
D. t² = 15/8

Answer 1

The correct equation to determine the time it takes for the tool to hit the ground is 30 = -16t².

Step-by-step explanation:

The correct equation to determine how long it would take for the tool to hit the ground when dropped from a height of 30 feet is C. 30 = -16t². This equation represents the distance fallen by the tool (30 feet) as a function of time (t). By solving this equation, you can find the value of t, which is the time it takes for the tool to hit the ground.