Laura is skydiving when at a certain altitude she opens her parachute and

s toward the ground with a constant velocity of 6.50 m/s, straight down.

What is Laura's displacement if it takes her 34.0 s to reach the ground?

The motion is under a constant velocity which means she has no acceleration.

So we can use,

Velocity = displacement / time taken

Displacement = velocity * time taken

= 6.5*34 = 221m

We consider distance she fall as displacement as she doesn't change her direction.