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1/132命题热点第1讲动量定理4/132矢6/1327/1328/132【答案】C10/132【答案】C12/132【答案】0.25s≤t≤0.5s14/132【答案】B16/13217/13218/13219/13220/13221/132【答案】ACD23/13224/13225/132【答案】AC27/132【答案】(1)21N(2)5∶329/13230/13231/13232/13233/13234/132【答案】(1)5m/s(2)106.25m(3)4第2讲动量守恒定律37/132第二定律39/132【答案】D41/13242/132【答案】BCD44/13245/13246/13247/13248/13249/13250/13251/13252/132【答案】AC54/13255/13256/13257/13258/13259/13260/13261/13262/13263/13264/13265/13266/13267/13268/13269/132【答案】(1)1.2J(2)静止0.4J71/13272/13273/13274/13275/13276/13277/13278/13279/132【答案】D81/13282/132【答案】BCD84/13285/13286/13287/13288/13289/13290/13291/13292/13293/13294/13295/13296/132【答案】D98/132【答案】B100/132【答案】D102/132103/132【答案】C105/132106/132107/132【答案】BC109/132110/132【答案】ABCD112/132【答案】AB114/132【答案】ACD116/132117/132118/132119/132120/132121/132122/132123/132124/132125/132126/132127/132128/132129/132130/132131/132132/132