A fighter plane flying horizontally at an altitude of 1.5 km with speed 720 km/h passes directly overhead an antiaircraft gun. At what angle from the vertical should the gun be fired for the shell with muzzle speed 600 ms^(-1)to hit the plane? At what minimum altitude should the pilot fly the plane to avoid being hit ?

A fighter plane flying horizontally at an altitude of 1.5 km with spee

1.	A fighter plane flying horizontally at an altitude of 1.5 km with speed 720 km/h passes directly overhead an antiaircraft gun. At what angle from the vertical should the gun be fired for the shell with muzzle speed 600 ms^(-1)to hit the plane? At what minimum altitude should the pilot fly the plane to avoid being hit ?
Answer» `sin^(-1) (1/3) , 16KM ` `cos^(-1) (1/3) , 18 KM ` `sin^(-1) (1/3) , 6km ` `cos^(-1) (1/3) , 6km` Answer :A