Question

Two bodies begin to fall freely from the same height. The second one begins to fall $\tau$ s after the first. The time after which the 1st body begins to fall, the distance between the bodies equals to $l$ is

• A. $\frac{l}{g\tau}+\frac{\tau}{2}$
• B. $\frac{g\tau}{l}+{\tau}$
• C. $\frac{\tau}{l \,g}+\frac{2}{\tau}$
• D. $\frac{g}{l\,\tau}+\frac{\tau}{2}$

Answer 1

Answer: (A)

$\frac{l}{g\tau}+\frac{\tau}{2}$

Answer 2

$S = ut + \frac{1}{2} at^2$