Physics - Kinematics Question with Solution | TestHub

Both balls are in free fall with the same acceleration $g$, so their relative acceleration is zero and the relative velocity stays fixed at $g\Delta t=10\times 1=10m/s$. Their speeds are $v_1=gt$ and $v_2=g(t-1)$, so $\frac{v_1}{v_2}=\frac{t}{t-1}$, which decreases towards 1 as time passes. The acceleration of the elevator does not matter once both are falling. Option C.