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April 16, 2014

Homework Help: physics

Posted by please..anyone help!! on Monday, March 18, 2013 at 2:58am.

Sally sells seashells by the seashore. In the morning, her sack of shells weighed 70 N. She sold seventy shells and in the evening her sack weighed 7 N. What was the average mass in kg of the shells she sold?

The acceleration of gravity is −9.8 m/s2.

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