Zephyr and Kai are standing at opposite ends of a long, narrow hallway. Zephyr throws a ball straight towards Kai. Assuming there are no obstacles between them, will the ball reach Kai or will it end up somewhere else if Zephyr does not apply enough force for it to reach all the way to Kai? Respond very briefly.
If Zephyr does not apply enough force for the ball to reach all the way to Kai, the ball will not reach Kai. Instead, it will travel part of the distance down the hallway and come to a stop after covering the distance proportional to the force applied by Zephyr. This is due to gravity causing the ball to eventually stop as its initial kinetic energy from Zephyr's throw is converted to other forms of energy such as heat from friction with the air and the floor. Without sufficient force to overcome these resistive forces over the entire distance, the ball will not reach Kai.