Look at the free- body diagrams to answer the following questions.

1. Why do free- body diagrams show only the forces that act on the arrow and not the forces that the arrow applies to other components in the system?

2. Which forces act on the arrow before it is released?
For each force, specify three things: (1) its direction, (2) whether it is a contact force or a force that acts at a distance, and (3) whether it is a pull or a push force.

3. Why does the arrow not move before it is released? Explain your ideas in terms of the forces that act on the arrow.

4. In terms of forces, what changes immediately after the arrow is released?

5. In terms of forces, what makes the arrow start moving?