湖南省衡阳市第一中学2018_2019学年高一物理下学期入学考试试题(扫描版).doc

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1234567o 2物 理参考答案一 、 选 择 题 。1 2 3 4 5 6 7 8 9 10 11 12B C B B A D A C AC BC BD AB二 、 实 验 题 。13.(1)3.6N(2)A(3)AC14. (1) A 与 B =F/mg(2) A、B 两个光 电门的距 离 x 2bx/kg 或 =2x(F/k-1/t2)/ g(偶然 误差相对 较大)三、计算题。15. (1)加速度: a=2h/t2(2)推 力 : F=mg+m(2h/t2)16(1)小 球平抛: x1=vot h=gt2/2解得 vo=10m/s(2)汽车减 速:由 v 2=2ax 得 a=4m/s2 f = ma f = mg得 =0.417. (1)N=mgtan300 (2) F=mgtan30018(1) t=4s (2) vo= m/s(3) t=2s8

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