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Q. While rummaging in her backpack for her cell phone, Sally's Mini-Cooper rear ends Joey's Suburban. Sally's car is totaled while the suburban is fine. If Sally's car hit the suburban with 30 N of force, how much force did Joey's car exert on Sally's? (a) more than 30 N, (b) less than 30 N, (c) exactly 30 N.
Ans.
Exactly 30 N, Newton's 3rd Law
A 10.0-kg object is held up by a string that will break when the tension exceeds 1.00 x 10 2 N. At what upward acceleration will the string break?
Force is.......?
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