Mouse Trap Physics

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