1. Apr 30, 2008 #1

   YesINeedhelp

   

   IF a man jumps off a building that is 90 m high, and gravity is 9.8 m/s, and he weighs 80 kg, then what will his velocity be just as he hits the ground?

    

   YesINeedhelp, Apr 30, 2008
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3. Apr 30, 2008 #2

   warmfire540

   

   just use the equation
   
   vf^2=vi^2 +2ax
   vf^2=0+2(9.8)(90)
   vf^2=1764
   v=42 m/s
   
   weight is irrelevant

    

   warmfire540, Apr 30, 2008

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