A student, looking toward his fourth-floor dormitory window, sees a flowerpot with nasturtiums (originally on a window

Question:

A student, looking toward his fourth-floor dormitory window, sees a flowerpot with nasturtiums (originally on a window sill above) pass his2.0-m high window in 0.093 s. The distance between floors in the dormitory is 4.0 m. From a window on which floor did the flowerpot fall?