Adrone is in level flight at a speed of 201 m/s and an altitude of 802 m. at what horizontal distance, in m, from the target should the remote pilot drop an aid package so it lands on target? physics

The (t) time taken for an object to fall from a height of (h) meters is given by: 
h = ½gt² 
where (g) is the acceleration due to gravity. (9.81 m/s² ) Plugging in your values: 
802 = ½ * 9.81 * t² 
t² = 2 * 802 / 9.81 t = 12.8 seconds 
So the package must be dropped when the drone is still 12.8 s from being overhead of the target. 

So the solution to know how far will the drown moving at 201 m/s get in 12.8 s
(201 m/s * 12.8 s) = 2570 m

No because scientist are still changing there mines today so they are not correct to this day