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The physics of a bouncing ball concerns the physical behaviour of bouncing balls, particularly its motion before, during, and after impact against the surface of another body. Several aspects of a bouncing ball's behaviour serve as an introduction to mechanics in high school or undergraduate level physics courses.
Example A shows a ball bouncing with a rigid, non-dynamic movement. In example B the ball is "squashed" at impact, and "stretched" during fall and rebound Squash and stretch is the phrase used to describe "by far the most important" [ 1 ] : 47 of the 12 basic principles of animation , described in the book The Illusion of Life by Frank Thomas ...
Also, the ball moves less in the beginning and end (the "slow in and slow out" principle). The purpose of squash and stretch [4] is to give a sense of weight and flexibility to drawn or computer-animated objects. It can be applied to simple objects, like a bouncing ball, or more complex constructions, like the musculature of a human face.
A bouncing ball photographed at 25 frames per second using a stroboscopic flash. In between bounces, the ball's height as a function of time is close to being a parabola, deviating from a parabolic arc because of air resistance, spin, and deformation into a non-spherical shape upon impact.
A bouncing ball captured with a stroboscopic flash at 25 images per second. Each impact of the ball is inelastic, meaning that energy dissipates at each bounce. Ignoring air resistance, the square root of the ratio of the height of one bounce to that of the preceding bounce gives the coefficient of restitution for the ball/surface impact.
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This pass consists of one player passing the ball to a teammate by bouncing the ball off the floor. Because the ball will be at ground level as it passes a defender, a successful bounce pass can easily result in a scoring assist because a bounce pass is harder for defenders to steal. Still, a bounce pass may be stolen due to its slower speed.
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