- #1

StephenDoty

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so if a 22cm diameter ball has a terminal velocity of 85m/s, what would the mass of the ball be?

A = 4pi r^2

22cm= 0.22m

v^2 = (39.2m)/(4pi (.11)^2)

7225= (39.2m)/(pi*.0484)

So I got 28kg for the mass and that is not right. Please help.

Stephen Doty