A student investigates how air resistance affects falling objects using a small toy parachute.
The toy parachute is shown in Figure 1.

The terminal speed of the falling parachute depends on the mass of the payload, which is varied by placing different numbers of identical steel washers into the payload holder.
The student has the toy parachute, a box of identical steel washers, a tape measure, and a stop clock.
Describe an investigation to show how the terminal speed of the falling parachute depends on the number of washers in the payload holder.