Principles Illustrated : Inertia
- Object at rest stays at rest
- Object at rest stays at rest unless acted upon by an outside force.
PHYSICS1.b Grade Nine through Twelfth:
Prior knowledge & experience:
Tower of blocks will topple when one is pulled out from below.
What will happen to the penny when the card is pulled away?
The penny stayed in place and then fell into the cup, because it acted in accordance with the First Law of Inertia; “An object at rest will remain at rest until acted upon by an outside force”.
Most students will predict that the coin will slide off with the card and go flying.
Coin and tumbler
a Place the coin on the card, and place the card over the open end of a beaker.
b Flick the card away sharply and observe the effect of the coin's motion.
Nuffield Foundation IOP Institute of Physics
YouTube : http://youtu.be/nslpjejWlLE
Related video, tablecloth pull: http://youtu.be/POfoWEaUOKI http://youtu.be/01ajkrYj3bg