Mouse Trap Physics

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.
The balance point of an object is called the center of ______________.
A car built for distance requires a ____________ lever arm.
A twisting force.
Who invented the spring loaded mouse trap?
What is the approximate speed of a mouse trap hammer?
Most cutting devices use the principle of:
Energy that is stored is called:
What is the sleeve called that is used to give the axle a smooth surface to rub against.