Homework Help: Physics

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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