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第一章 力1.A.2.C.3.B.4.B.5.C.6.B.7.D.8.B、C、D.9.A、D.10.B、D.11.A、D.12,A、B、D.13.A、C、D.14.0～15N. 15.28N;25N.16.10N;与大小为F_3.的力同向 .17.F/2sin(θ/2).18.102~(1/2)N≈14.14N.19.203~(1/3)N,103~(1/3)N.20.50(2-3~(1/3))N≈13.4N.第二章 物体的运动1.B.2.A.3.A.4.B.5.D.6.B.7.D.8.D.9.C、D.10.C、D 11.B、C.12.B、C、D.13.A、B、C.14.A、B、C.15.18.16.10m/s.17.4m/s~2.18.25km/h.19.5m/s.20.-0.4m/s~2m/s.21.-500m/s~2.2m/s~2;相反.23.32.5m.24.45m.25.1m/s;2.5m/s~2.26.400m;20m/s;40s.(第一、二章由江苏省姜堰中学李环生老师编)第三章 牛顿运动定律1.D.2.D.3.C.4.A.5.C.6.C.7.C.8.C.9.C.10.B、C.11.A、D.12.B、D.13.B、D.14.B、D.15.0,变加速,16.1.5m/s~2,4.5m/s.17.0.4.18.0.5m/s~2,6×10~3N.19.120,向下匀减速或向上勾加速,5m/s~2.20.2,0.8m/s~2.21.(1)10kg,(2)8m/s(3)260kg.22.(1)a=(2F)/(3m).(2)s=(Ft~2)/(3m).23.S=1Om,v=2m/s.(本章及力学综合由南京师大附中周久(?)老师编)
Chapter 1. Force 1.A.2.C.3.B.4.B.5.C.6.B.7.D.8.B,C,D.9.A,D.10.B, D.11.A, D.12, A, B, D.13.A, C, D.14.0 to 15N. 15.28N; 25N.16.10N; and the force F_3. of the same direction. 17.F/ 2sin(θ/2).18.102~(1/2)N≈14.14N.19.203~(1/3)N,103~(1/3)N.20.50(2-3~1/3)N ≈13.4N. Chapter 2 Movement of Objects 1.B.2.A.3.A.4.B.5.D.6.B.7.D.8.D.9.C.D.10. C, D 11.B, C.12.B, C, D.13.A, B, C.14.A, B, C.15.18.16.10m/s.17.4m/s~2.18.25km/h .19.5m/s.20.-0.4m/s~2m/s.21.-500m/s~2.2m/s~2; Opposite .23.32.5m.24.45m.25.1m/s; 2.5m/s ~2.26.400m; 20m/s; 40s. (The first and second chapters are edited by Li Huansheng, Jiangsu Jiangyan Middle School) Chapter 3 Newton’s Law of Motion 1.D.2.D.3.C.4.A. 5.C.6.C.7.C.8.C.9.C.10.B, C.11.A, D.12.B, D.13.B, D.14.B, D. 15.0, Variable Acceleration, 16.1.5m/s~2, 4.5m/s.17.0.4.18.0.5m/s~2, 6×10~3N.19.120, Downward Evenly Deceleration or Upward Acceleration, 5m/s~ 2.20.2,0.8m/s~2.21.(1)10kg,(2)8m/s(3)260kg.22.(1)a=(2F)/(3m).(2)s=(Ft~ 2)/(3m).23.S=1Om,v=2m/s. (This chapter and mechanics were edited by the teacher attached to Nanjing Normal University Fuzhong Zhou Jiu (?))