Question

1. which of the following is true about wedges?

wedges are a type of lever.
wedges are a type of ramp.
wedges are a type of inclined plane.
wedges are a type of screw.

Explanation:

A wedge is a simple machine that can be thought of as two inclined planes back - to - back. A lever has a fulcrum, effort arm, and load arm, which a wedge does not. A ramp is a single inclined plane, and a screw is a helical inclined plane.

Answer:

Wedges are a type of inclined plane.