resistance
The linear resistance for the behavior’s dynamic items, which reduces their linear velocity over time.
Declaration
var resistance: CGFloat { get set }Discussion
Default value is 0.0. Valid range is from 0.0 for no velocity damping, to CGFLOAT_MAX for complete velocity damping. If you set this property to 1.0, a dynamic item’s motion stops as soon as there is no force applied to it.