The concept behind this is that the penny's inertia is greater than the friction between itself and the card. As the card is accelerated away by hitting it, the penny's inertia overcomes the friction between the card and itself. The result is that the card leaves, while the penny is left over the mouth of the bottle with nothing to support it.
thanks! I wasnt sure how it worked but it was something like that!
chazzer95 4 years ago
The concept behind this is that the penny's inertia is greater than the friction between itself and the card. As the card is accelerated away by hitting it, the penny's inertia overcomes the friction between the card and itself. The result is that the card leaves, while the penny is left over the mouth of the bottle with nothing to support it.
k0namiman 4 years ago