Question

4(25) Offshore the USS lo wa is g enemy's position in preparation for of the 1 angled up 40° above the horiz h guns is 2,690 f posi and the Coriolis effect. Exp an amphibious ight of the gun above the The enemy position is at sea level will it take for the shell to hit waterline is 26.15 t How far is the and is 40a from the enemy's ft's and the hei P trom t ition and how long and the c and how lone air mile528s xpress your results in mil 26.15 ft

Answer 1

Velocity of projectile = 2690 ft/s V_x = 2690 cos 40 degree = 2060.65 ft/s V_y = 2690 sin 40 degree = 1729.10 ft/s equation of motion s = ut + 1/2 at^2 implies - 26.15 ft = 1729.10 times t + 1/2 times (- 32.2)times t^2 implies - 26.15 ft = 1728.10 t - 16.1 t^2 implies t = 106.17 s v_y = 1729.10 ft/s here distance travelled = 1729.1 times 106.17 ft = 183578.54 ft = 34.768 miles