A person throws a 2.50 lb stone into the air with an initial upward speed of 15.0 ft/s.

Part A- Make a free-body diagram of the forces for this stone after it is free of the person's hand and is traveling upward

Part B -
Make a free-body diagram of the forces for this stone at its highest point.

Part C -
Make a free-body diagram of the forces for this stone when it is traveling downward.

To answer these questions, we need to understand the forces acting on the stone and their direction at each stage. Here's how you can approach each part:

Part A - Forces when the stone is traveling upward:
1. Draw a dot to represent the stone in the middle of the diagram.
2. Label the stone with its mass (2.50 lb).
3. Represent the force of gravity acting downward by drawing a downward arrow on the stone. Label it as "Weight" or "mg," where m is the mass and g is the acceleration due to gravity (approximately 32.2 ft/s²).
4. Represent the force of air resistance (friction) acting upward by drawing an upward arrow on the stone. Label it as "Air Resistance."
5. Since the stone is moving upward, the net force must be in the upward direction. Draw an upward arrow on the stone and label it as "Net Force."

Part B - Forces at the stone's highest point (at the top of its trajectory):
1. Draw a dot to represent the stone in the middle of the diagram.
2. Label the stone with its mass (2.50 lb).
3. Represent the force of gravity acting downward by drawing a downward arrow on the stone. Label it as "Weight" or "mg."
4. At the highest point, the stone has momentarily stopped moving vertically, so its upward velocity is zero. Thus, the force of air resistance is not present (assuming negligible air resistance). Do not draw an arrow.
5. Since the stone is at rest vertically, the net force is zero. Do not draw an arrow for the net force.

Part C - Forces when the stone is traveling downward:
1. Draw a dot to represent the stone in the middle of the diagram.
2. Label the stone with its mass (2.50 lb).
3. Represent the force of gravity acting downward by drawing a downward arrow on the stone. Label it as "Weight" or "mg."
4. Now that the stone is moving downward, the force of air resistance acts opposite to the direction of motion. Draw an upward arrow on the stone and label it as "Air Resistance."
5. Since the stone is moving downward, the net force must be in the downward direction. Draw a downward arrow on the stone and label it as "Net Force."

Remember, these free-body diagrams represent the forces acting on the stone at each stage. By understanding these forces, you can analyze the stone's motion and its interactions with its surroundings.