From the top of a 11 m high tower a stone i s projected with

Last updated: 6/13/2023

From the top of a 11 m high tower a stone i s projected with speed 10 m s at an angle of 37 with the horizontal find T Time of flight note i already got the answer but have a do ubt while solving if i take g to be negative as the object is fallling down answer comes ou t to be 11 5s whereas if i take g as positive the answer comes out to be 1 how to know what to use as both the answers are differe