"Bounce" refers to the action of an object rebounding off a surface after hitting it. This phenomenon occurs due to the object's elasticity, which allows it to return to its original shape after deformation. Common examples include a basketball bouncing on a court or a rubber ball rebounding off a wall. The height and speed of a bounce depend on various factors, including the material of the object and the surface it strikes. For instance, a tennis ball will bounce differently on grass compared to a hardwood floor. Understanding bounce is important in sports, physics, and engineering.