Place an index card on top of an empty cup. Set a penny in the middle of the index card.
Flick the card out....
...and the penny falls into the cup (the cup is a much larger target than your finger!)
Inertia: Penny In a Cup
If you found getting a penny to balance on your finger to be a bit too challenging, this might be more your speed.
Place an index card on top of an empty cup. Set a penny in the middle of the index card.
Flick the card out....
...and the penny falls into the cup (the cup is a much larger target than your finger!)
Place an index card on top of an empty cup. Set a penny in the middle of the index card.
Flick the card out....
...and the penny falls into the cup (the cup is a much larger target than your finger!)