You first walk 8.0 km north from home, then walk east until your displacement from home is 10.0 km. How far east did you walk?

You use Pythagorean theorem

10^2 = 8^2 + b^2
100 = 64 + b^2
b^2 = 36
b = 6

You walked 6km east

That would be the corect answer hope this

The objects do not reach terminal velocity         there is not enough time from the time the object falls from when it hits the ground to achieve terminal velocity. an object must be placed higher to achieve terminal velocity in order to be in free fall.