Question

what is the purpose of a free body diagram?

to show the
direction of motion
vectors of an
object

to show the forces
acting on an object

to show the
velocity of an
object

to show the
acceleration of an
object

Explanation:

A free - body diagram is a tool in physics (a sub - field of Natural Science). Its main purpose is to visually represent all the forces that are acting on an object. Direction of motion vectors, velocity, and acceleration are related to the motion of the object, but the free - body diagram focuses on the forces. For example, if we have a book on a table, the free - body diagram would show the gravitational force pulling it down and the normal force from the table pushing it up.

Answer:

B. to show the forces acting on an object