What is the acceleration of a skydiver at terminal velocity whose mass is 80 kg?

At terminal velocity, a skydiver reaches a constant speed where the force of gravity acting on them is balanced by the drag force due to air resistance. This balance results in no net force acting on the skydiver, meaning acceleration becomes zero.

Since acceleration is defined as the change in velocity over time, when a skydiver is at terminal velocity, they are no longer accelerating despite falling; they fall at a steady speed. Therefore, the acceleration of the skydiver at terminal velocity is indeed 0 m/s². The weight of the skydiver (which can be calculated using their mass and gravitational acceleration) and the drag force are equal at this point, confirming that the acceleration is zero.