In a projectile motion, there are two components: horizontal and vertical. The vertical component is in a uniformly accelerated motion. The motion is always directed downwards due to the force of gravity. The horizontal component (constant velocity) on the other hand must move in the horizontal axis. They can never be parallel on the trajectory.
They can only by parallel during a free fall motion, wherein no change of horizontal direction occurs.
If you have only white shirts in your closet, the probability of pulling a red shirt would be 0/x, where x represents the total number of shirts in the closet.
