Three identical blocks each take a different path from a height h to the ground. block a is released from rest and falls vertically. block b is released from rest and slides down a frictionless incline. block c is projected horizontally with an initial speed v. which block takes the longest time to reach the ground?
lock C has the greatest speed when it hits the ground, since in addition to the Potencial Energy (which was the same for all blocks), it also had an initial horizontal velocity. But it IS true that all three blocks hit the ground at the same time.
