Question

Question and answer choices in image below.

Answer 1

the units need to be consistent on both sides of the equality.

that means that since the unit of s is feet, the unit of (1/2)gt^2 must also be feet

\[ft = \frac{ 1 }{ 2 } g s^2 = \frac{ 1 }{ 2 }\left( \frac{ ft }{ s^2 } \right)s^2\]

the s^2 cancel out and both sides have the onsistent unit of feet

Answer 2

consistent*

coinclusion. g = acceleration = ft/s^2

Answer 3

Thank you!! (: