Physics
posted by Russ .
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?
I think it would be 146 = (8 m/s) Is that correct?

from +14 to 6 is 22
final = 6
original = 14
final  original = 6 14 = 22 
Shouldn't it be 20,not 22

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

Change in velocity = VfVi =6  14 = 8
m/s.