Mark H. answered • 01/21/20

Tutoring in Math and Science at all levels

You have the equation for distance (height) as a function of time. When it hits the ground the distance is zero.

So:

d = -16t^2 + 2700 = 0

Solve this equation for t

Rachael G.

asked • 01/21/20A penny is dropped from the top of Dubai’s newest skyscraper. The distance, in feet, between the penny and the ground t seconds after it dropped is given by: d = -16t^2 + 2700.

How long after the penny is dropped does it hit the ground?

Follow
•
2

Add comment

More

Report

Mark H. answered • 01/21/20

Tutoring in Math and Science at all levels

You have the equation for distance (height) as a function of time. When it hits the ground the distance is zero.

So:

d = -16t^2 + 2700 = 0

Solve this equation for t

Ask a question for free

Get a free answer to a quick problem.

Most questions answered within 4 hours.

Find an Online Tutor Now

Choose an expert and meet online. No packages or subscriptions, pay only for the time you need.