Can y’all help me on question two?!

If a flying disk is 139 meters in the air and travels at an average of 13 m/s how long is it in the air

Segment wx is shown explain how you would construct a perpendicular bisector of wx using a compass and a straightedge

Kelli swam upstream for some distance in a hour.she then swam downstream the same river for the same distance in only 6 minutes.if the river flows at 5km/hr, how fast can kelli swim in still water?