If a ball is thrown into the wall at 14 m/s and comes off at 6 m/s, what is change of velocity of the ball?

Question

I think it would be 14-6 = (-8 m/s) Is that correct?

Answer 1

from +14 to -6 is -22
final = -6
original = 14
final - original = -6 -14 = -22

Answer 2

Shouldn't it be -20,not -22

Answer 3

Damon helped me to solve this problem but I think it adds up to -20 not -22, correct?

Answer 4

Change in velocity = Vf-Vi =6 - 14 = -8
m/s.