You drop a ball from a window on an upper floor of a building and it is caught by a friend on the ground when the ball is moving with speed $\backslash ($ v$\_\{$f$\}\backslash ).$ You now repeat the drop, but you have a friend on the street below throw another ball upward at speed $\backslash ($ v$\_\{$f$\}\backslash )$ exactly at the same time that you drop your ball from the window. The two balls are initially separated by $48\mathrm{.}1$ m $.$

$($a$)$ At what time do they pass each other?

s

$($b$)$ At what location do they pass each other relative to the window? m

Need Help?

$$ow My Work