Posted by **Russ** on Wednesday, January 5, 2011 at 4:24pm.

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 14-6 = (-8 m/s) Is that correct?

- Physics -
**Damon**, Wednesday, January 5, 2011 at 4:44pm
from +14 to -6 is -22

final = -6

original = 14

final - original = -6 -14 = -22

- Physics-shouldn't it be -20 instead of -22 -
**Russ**, Wednesday, January 5, 2011 at 4:58pm
Shouldn't it be -20,not -22

- Physics-could someone check -
**Russ**, Wednesday, January 5, 2011 at 5:37pm
Damon helped me to solve this problem but I think it adds up to -20 not -22, correct?

- Physics -
**Henry**, Thursday, January 6, 2011 at 8:52pm
Change in velocity = Vf-Vi =6 - 14 = -8

m/s.

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