Posted by **britney** on Wednesday, December 6, 2006 at 7:08pm.

if the force which propels the cannonball forward is 500 n, how much force will move the cannon backward?

I assume -500n because forward is the opposite of backward, and 500n is the opposite of -500n.

Forces occur in equal and opposite pairs.

- science -
**Anonymous**, Thursday, March 26, 2009 at 3:46pm
5774

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