I am trying to understand the physics behind why and how a ball stretches when bouncing.
Two questions I have regarding this:
Does the amount of stretch depend on the velocity vector? If so would a ball in a vacuum stretch when moving with a constant velocity?
Most common depictions of a bouncing ball show the ball stretch in the direction of movement (ie the velocity vector). Is this accurate? My intuition tells me the ball should stretch in the direction of force / acceleration vector. So if a ball bounces while moving forward horizontally, it should stretch in the vertical direction only and not in the direction of the velocity vector?