Question

question 1
choose the best answer from the options that follow each question.
the final velocity of an object undergoing free - fall from rest is proportional to
question 2
two students are standing on a fire escape, one twice as high as the other. simultaneously, at time d. when will the second ball strike the ground? (disregard air resistance. assume a

Explanation:

Step1: Recall free - fall formula

The kinematic equation for an object in free - fall starting from rest ($v_0 = 0$) is $v^2=v_0^2 + 2ax$. Here, $v_0 = 0$, $a = g$ (acceleration due to gravity) and $x=\Delta x$ (displacement). So $v^2=2g\Delta x$, and $v=\sqrt{2g\Delta x}$. This shows that $v\propto\sqrt{\Delta x}$.

Answer:

The first option (the one that looks like $\sqrt{\Delta x}$)

Since the second question is incomplete (the text is cut off), we can only answer the first question. If you provide the complete second - question, I can answer it as well.