Physics simulation

Android and iOS both have complex scrolling physics
simulations that are difficult to describe verbally.
Generally, iOS’s scrollable has more weight and
dynamic friction but Android has more static friction.
Therefore iOS gains high speed more gradually but stops
less abruptly and is more slippery at slow speeds.

Overscroll behavior

On Android,
scrolling past the edge of a scrollable shows an
overscroll glow indicator (based on the color
of the current Material theme).

On iOS, scrolling past the edge of a scrollable
overscrolls with increasing resistance and snaps back.

Momentum

On iOS,
repeated flings in the same direction stacks momentum
and builds more speed with each successive fling.
There is no equivalent behavior on Android.

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