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Basic Physics Question

  • #1
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?
 

Answers and Replies

  • #2
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
 

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