Askiy diver, with parachute unopened, falls 625 m in 15.0s.
then she opens her parachute and falls another 356 m in142 s. what
is her average velocity (both magnitude anddirection) for the
entire fall?

average velocity = 6.25m/sec

Explanation:

given data:

for unopened

height = 625 m

time  = 15 sec

for opened

height = 356 m

time =  142 sec

Unopened:

Opened:

we know that

Total Average Velocity

average velocity

average velocity = 6.25m/sec

downward direction.

the independent variable, or the one that is intentionally manipulated is the speed.