The last two examples are simple machines. See the links for pix.
a compound machine is a combination of simple machines
lever
It's a simple machine.
the type of simple machine a staple gun in a .................... you figure out....... you were not born for nothing
Lever
Lever
wedge is another simple machine kind of lever
the type of simple machine a staple gun in a .................... you figure out....... you were not born for nothing
A catapult is actually a compound machine.
leveres
Is a inclined plane
A wedge