Question

free - body diagrams with task tracker
a downward - moving skydiver who has just opened the parachute is slowing down. (diagram the forces on the skydiver/parachute system.)
identify the type of forces and their relative magnitude.

Explanation:

Step1: Identify gravity force

The force of gravity ($F_g$) acts downward on the skydiver - parachute system. It is given by $F_g = mg$, where $m$ is the mass of the system and $g$ is the acceleration due to gravity ($g\approx9.8m/s^{2}$).

Step2: Identify air - resistance force

The air - resistance force ($F_{air}$) acts upward. Since the skydiver is slowing down, the magnitude of the air - resistance force is greater than the magnitude of the gravitational force, i.e., $F_{air}>F_g$.

To draw the free - body diagram:

1. Draw a dot to represent the skydiver/parachute system.
2. Draw a downward - pointing arrow to represent the force of gravity ($F_g$).
3. Draw an upward - pointing arrow longer than the downward arrow to represent the air - resistance force ($F_{air}$).

Answer:

Draw a dot for the system. Draw a shorter downward arrow labeled $F_g$ and a longer upward arrow labeled $F_{air}$ acting on the dot.