A body is projected at angle 30^(@) to horizontal on a planet with a velocity of 80 ms^(-1) its time of flight is 4 seconds then acceleration due to gravity on that planet is

A body is projected at angle 30^(@) to horizontal on a planet with a v

1.	A body is projected at angle 30^(@) to horizontal on a planet with a velocity of 80 ms^(-1) its time of flight is 4 seconds then acceleration due to gravity on that planet is
Answer» `2ms^(-2)` `5 MS^(-2)` `10 ms^(-2)` `20 ms^(-2)` ANSWER :D