+0  
 
0
146
1
avatar

A penny is dropped off the Empire State Building, which is 1250 feet tall. If the penny’s pathway can be modeled by the equation h= -16t^2+1250, how long would it take the penny to strike a 6 foot tall person?

 Mar 6, 2020
 #1
avatar+21874 
+1

h  =  -16t2 + 1250

Since  h = 6     --->     6  =  -16t2 + 1250

                              16t2  =  1244

                                  t2  =  77.75

                                   t  =  sqrt(77.75)     --->     8.82 sec                           (ignore the negative square root)

 Mar 6, 2020

9 Online Users