Please help, these questions are actually irritating me **If the simple machine reduces the amount of force, what must be increased? (Think of using an inclined plane)**

A.) the speed of the input force

B.) the distance over which the force is applied

C.) the work the simple machine performs

D.) the size of the simple machine

**What is an input force?**

A.) the force a simple machine applies to an object

B.) the force a person applies to a simple machine

C.) the applied force on a system

D.) the net force on a system

**A pair of scissors is which category of lever?**

A.) 1st class

B.) 2nd class

C.) 3rd class

D.) 4th class