English physics problem about forces(simple!)A force F1 acts on an object O and this same force F1 forms a Newton's third law pairwith a second force,F2.State 2ways in which they are similar and 2 ways in which they differ.

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English physics problem about forces(simple!)A force F1 acts on an object O and this same force F1 forms a Newton's third law pairwith a second force,F2.State 2ways in which they are similar and 2 ways in which they differ.
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English physics problem about forces(simple!)A force F1 acts on an object O and this same force F1 forms a Newton's third law pairwith a second force,F2.State 2ways in which they are similar and 2 ways in which they differ.
English physics problem about forces(simple!)
A force F1 acts on an object O and this same force F1 forms a Newton's third law pairwith a second force,F2.State 2ways in which they are similar and 2 ways in which they differ.

English physics problem about forces(simple!)A force F1 acts on an object O and this same force F1 forms a Newton's third law pairwith a second force,F2.State 2ways in which they are similar and 2 ways in which they differ.
呼呼.终于看懂了.（似乎）.牛3很简单的呀.找什么相同和不同.就是作用力和反作用力嘛.
similar:①力的作用是相互的.同时出现,同时消失.
②相互作用力一定是相同性质的力
③作用力和反作用力作用在两个物体上,产生的作用不能相互抵消.
④作用力也可以叫做反作用力,只是选择的参照物不同
⑤作用力和反作用力因为作用点不在同一个物体上,所以不能求合力
differ:①相互作用力是大小相等、方向相反、作用在两个物体上、且在同一直线上的力；两个力的性质是相同的.
②平衡力是作用在同一个物体上的两个力,大小相同、方向相反,并且作用在同一直线上.两上力的性质可以是不同的.
③相互平衡的两个力可以单独存在,但相互作用力同时存在,同时消失

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