Question

In order to maintain a consistent drop height, which part of the ball

should be aligned with the chosen starting point; the top, the middle, or the

bottom? Explain

Answer 1

The bottom part of the ball should be aligned with the chosen starting point, in order to maintain a consistent drop height.

This is because when the ball is dropped from a height h unit it's bottom part touches the ground surface. So, for each part of the ball to fall a distance of h unit, it's bottom must be dropped from a height h unit. If we align the middle part or top part of the ball with the chosen starting point, then the dropped height of the ball will become a bit less than the chosen height.