A fighter plane flying horizontally at an altitude of 1.5 km withspeed 720 km/h passes directly overhead an anti - aircraft gun . Atwhat 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 ? (Take g=10 " ms "^(-2)).

A fighter plane flying horizontally at an altitude of 1.5 km withspeed

1.	A fighter plane flying horizontally at an altitude of 1.5 km withspeed 720 km/h passes directly overhead an anti - aircraft gun . Atwhat 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 ? (Take g=10 " ms "^(-2)).
Answer» ANSWER :At an ANGLE of `sin^(-1)(1//3)=19.5^(@)` with the vertical ; 16 KM .