9. A cannon shoots a cannonball horizontally across a large open field at 30 m/S. At the Same time, a stone is dropped from the same height as the cannon. Which will hit the ground first? Ignore air resistance. A.The cannonball will hit the ground first. B.The brick will hit the ground first. C.They will hit the ground at the same time. D.Need more information to determine which will hit the ground first