A physics demo launches a ball horizontally, while dropping a second ball vertically at exactly the same time.
1)Which ball hits the ground first?
Launched (horizontally) ball
Dropped ball
Both hit at the same time.
http://www.smartphysics.com/Images/P...2/balldrop.gif
The answer should be "both hit at the same time" right, because they have the same y-final, y-initial, initial velocity, and acceleration due to gravity?