PLEASE HELP ME PLS ITS MATH

Lewis Smith asked Nov 7, 2023

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Lewis Smith asked Nov 7, 2023

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18 votes

Answer:

Explanation:

We know that

h(t)=-16t^2+1296

The balls hits the ground when h(t)=0, so

$-16t^2 + 1296=0 \\ \\ t^2 - 81=0 \\ \\ t^2 = 81 \\ \\ t=9$

Note I only considered the positive case because time must be positive.

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