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My math

Ivan dropped a little chick out of the house at a height of 26 ft how long will it take to hit the ground?  

 

 

                                             H=-16t2+s

0=-16t2+26

-26         -26

 

-26=-16t2

-16   -16

 

 

√1.625=√t2        ±1.30=t

 

A ball was thrown at a height of 26 ft and with a velocity of -5 ft/sec how long will it take to hit the ground?

 

 

                                         h=-16t2vt+s

                                        h=-16t2+-5t+26

                                         

 

                                 x=-b±√b2-4ac

                                         2a

                                      x= --5±√52-4(-16)(26)

                                                2(-16)

 

                                          x=5±√ 25+1664

                                                  -32

 

                                       x=5±√ 1689

                                                 -32      

x=5+41.09     =-1.44 sec.

      -32                                                                                        x=5-41.09   =1.12 sec

                                                                                                          -32