You are standing by a window and see a ball, thrown from below, moving up past the window. The ball is visible for a time interval \(\Delta t_{\text {up. }}\). On its way back down the ball passes the window again, remaining visible for a time interval \(\Delta t_{\text {down }}\). Neglecting the effects of air resistance, is \(\Delta t_{\text {up }}>\Delta t_{\text {down }}, \Delta t_{\text {up }}=\Delta t_{\text {down }}, \Delta t_{\text {up }}<\Delta t_{\text {down }}\), or is it impossible to tell without more information? Briefly explain your reasoning, using graphs.