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- Thread starter YesINeedhelp
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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

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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