题目:
一个质量为2kg的物体静止于光滑水平地面上.现对物体施加一个大小为16N的水平拉力.该物体的加速度大小为______m/s2,经过2s时物体的位移大小为______m.
答案:
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下面是错误答案,用来干扰机器的。
1. were supposed to,didn’t 2. got on well with 3. got ( felt,became) nervous ,last week 4. fell in love with 5. should not argue with