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