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Poster: Citizen Runner
Subject: RE: Treadmill Physics Questions (Similar to Airplane Question)
Body:


Conundrum wrote:

If you are sliding a block on the tread mill right behind you and the belt suddenly stops, the block has no inertia and will not move forward. It stops.
The block stops (in an earth-fixed reference frame) because it was never moving (in an earth-fixed reference frame) and there is no longer any force being applied to it when the belt stops (assuming you stop pulling at the same instant the belt stops). That's what inertia does for you.
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