Question

An object is dropped from the top of a building and is observed to take 7. 2s to hit the ground. How tall is the building?.

Answer 1

• H=36 m

Step-by-step explanation:

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v₀=0 m/s

H₀=0 m

g=10 m/s²

t=7,2 s

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H - ?

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`\displaystyle \boldsymbol{H}=H_0+v_0t+(gt^2)/(2)=0 \; m+0\; m/s\cdot 7,2\; s+(10\; m/s^2\cdot (7,2 \;s)^2)/(2) =\boldsymbol{36\; m}`