A flowerpot sails first up and then down past an open window. The pot is in view for .5 sec and the height of the window (top to bottom) is 2 m. how high does the flowerpot go?

Not enough info how long out of sight over window is .5 sec total or one way.

It goes up and supposedly never returns down. Its asking how far up did the pot go above the top of the window..