The forces acting on the parachutist are:

1. Gravity and weight
2. Upthrust and drag
3. Gravity and air resistance
4. Drag and friction

3. Gravity and air resistance

Did you know?

Did you know that when a parachutist jumps out of an aircraft, they experience a combination of different forces? The main forces acting on them are gravity and air resistance, also known as drag. Gravity pulls the parachutist down towards the ground, while air resistance, caused by the movement through the air, pushes against their motion. In addition to these forces, the parachutist also experiences weight due to their mass and the gravitational pull of the Earth. Lastly, as the parachutist moves through the air, they may also encounter another force called friction, as the air molecules rub against their body or the parachute. All of these forces play crucial roles in determining the parachutist's speed, acceleration, and overall descent.