Question

How long would it take for a penny dropped rom the top of the Empire State Building to reach the ground if the building is 1,249ft tall? (3.28ft=1m) Round your answer to 3 significant figures.

(please show the formula used and all work!)

Answer 1

Use the formula for distance dropped from rest:

D = 1/2 a t^2 .

With no air resistance, you get about 8.8 sec.

I'm pretty sure you can fill in the missing work.