When the ball is stationary on the floor, if you slap it enough to make it bounce again, it is pinned to the floor, although briefly. This still seems like the ball is "at rest in the hand" to me. I see no time limit on "at rest."
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I swear, Gus, you'd argue with a possum.
It'd be easier than arguing with you, Woodrow.
Lonesome Dove
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