Mouse Trap Physics

Most cutting devices use the principle of:
What is the sleeve called that is used to give the axle a smooth surface to rub against.
A compressed spring of a mouse trap car is an example of ____________ energy.
Who invented the spring loaded mouse trap?
In general the longer the length of the plan the _________ force is needed to move the object.
A twisting force.
A car built for distance requires a ____________ lever arm.
Energy that is stored is called:
The balance point of an object is called the center of ______________.
What force opposes motion and has a great effect on a mouse trap cars performance.