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A Forgotten Phone

If you set a glass on a napkin and pull gently, the glass and the napkin should move together across the table. No big deal.

For a challenge, pull harder and try to slide the napkin out from under the glass — bonus points if you leave the glass standing!

Today's challenge can help you pinpoint the acceleration you need to remove the napkin successfully. Good luck! Post your attempts in the explanations — but any broken glassware is on you!

This Daily Challenge has expired

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