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2019届高考物理二轮复习第二部分热点专练热点十一力学综合题课件201902203244.ppt

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热点十一 力学综合题,考向一 “木板滑块”模型,考向二 传送带模型,答案 (1)1.25 m (2)vCD4 m/s 1.16 s t2.1 s,考向三 与弹簧相关的问题,答案 (1)5 m (2)22 N,答案 (1)2.5 m/s2 (2)1 m/s (3)0.45 m,答案 (1)3 m/s (2)4 m/s (3)0.54 m,答案 见解析,

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