## anonymous 4 years ago Help!! The time t (in seconds) it takes an object dropped from a height h (in feet) to reach the ground is given by the function t = 1/4 √h. HELP ME: A rock is dropped from a bridge 225 feet above the water. How long does it take the rock to reach the water?

1. anonymous

replace h by 225 and use a calculator

2. anonymous

3.75 seconds?

3. anonymous

$\frac{1}{4}\times \sqrt{225}=\frac{1}{4}\times 15=3.75$ yes!

4. anonymous

Thank you!

Find more explanations on OpenStudy