taxa de variaçao1

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30/05/13 Problema Cálculo | Brilliant
https://brilliant.org/assessment/k/rate-of-change/1/ 1/1
At a height of 76 m, a man threw a stone straight up with a velocity of 49
m/sec. After seconds, the height of the stone from ground is 
. Find the velocity (in m/sec) of the stone after 2
seconds.
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