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Homework Help: Physics-Please check answer

Posted by Russ on Wednesday, January 5, 2011 at 5:39pm.

Damon helped me with this calc but I think the answer should be -20, not -22, could someone please check the calculation

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

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