1、(20 16916 07029 0100(30)3g1o m/s zI(13339)1ABCD22 0 163 1ABC3D50320 168142:0ABCD4ABCD520 15416100(9 500 F)10 s1(6)AB lCD6ANSBCDBSB S7rF FtAB0CD8GF,A0=60,F-G/2A16:1B1:4C1:4D4:11o2 0 16ABCD2(6)B9 0FC012 0F-GDOF94:1:16,I IiJil t,lJl P)WJ0 I)0 20 166 11l lJr tJ)i!l,jl1 1fi 1lpJlTl lj9P JAIBCD12IABCL,(L)
2、B0E(.D45AEBE99.CEDEL9130 20 4500111oA2 x l o 5B2 x l o 7C2 l o 9D2 l o n(326210)14FABCD15)x1-01m/s,15 LVCln;V Bt3(6)APyB0 1 s,PQC0 2 sQ30 c mD0 4 s,Px40 c m16rA10 r/sB6VCu-12 s in 5 n t VDW(755)17(5)(1)ABC(2)()ABcD(3)r()AB0rCD0r4(6)18(5)(1)()A()B()C()D()(2)(ABCQ(3)V.7:19(8)vt4 0 l o 5 kg0 02(1)A(2)(
3、3)2 0(13)A B2RB cRA BRm(g)(1)Cv l(2)C(3)1 5R,A BB CA B0.A5(6)0 5R6R2 1(4)a ba ba abba abb(1)pp,0()P,P 2(3)()AP,.P,Ba baCDA O9 0o22(10)A-0 25 mB=0 0 1 T,x0 4x0 6(m-1 6 10 27 kgq-1 6 10 19 C,f1f(1)IB?10.(2)2 8 8 e v,1j v0 40 6 TmM?23(10)1BtamR,b2m2R.av o(ab)(1)b(aob26(6 X)1()b(3)ba(20 169)1(13339)2 1
4、34 1 5 1 6 L 7 1 8 11lID IIcIAIBD I1i(326210)114116A CB C(75 5)5(1)1(2)(3)218(1)B(2)H(3)200 0(2 00)5(1)(3)2(2)119(l)v4 32 k m/h12 0 m/s,t720 svIS=(7 2 012 0 0)12 0(2)A1152 00 m115 2 k n 1(1)2V(a=t(1)a0 5 m/s 2(1)(3)F/=m a(1)X f0 02 m g(1)F=2 8 10 5 N(1)(1)3(2)2(3)320(1)C6 m g-=2 5m g R+m v r2(2)v,21
5、(4)(2)CF,B!F=6 m g(l)F.6 m g(3)A Bxl26 m g Rm g(R+f?0 5R)m v2(1)x=Vl(1)(2 5R+li)=g t2(1)X=2g5 Rh=1 5Rxx.-8R(1)(1)3(2)4(3)62 1(1)(2)(3)A C(1)(2)1(3)211222Vr1(1)q u2m v20(1)W B(1)U=2 B2(1)2n z0 x0 4 m,0 2 m(1)U,2 00 V(1)(2)m in-2 88 e vq.-28 8 VqrZ B2Uf m in0 24 m(1)2 mx,2 r m in-0 4 8 m(1)2(4)x 2-0 6m?bU li l1 m1=0 25 m 22 r.-0 5 m(1)x=xx l-0 0 2 m(1)(l)5(2)52 3(1)(2)2(2)bv 2 m v,+O=m h+2 1?1v,(1)2v 2v o14(1)bF1-02 m(1)4F=(1)2 t o(3)avF=I 1B=X IB()A 1iO,vv=-m vB2 t2v-1?1Vm v(1)Bz 12v i Mi M(1)3R2X=V,-3n?v o R(1)2 B1 1+(1)2(2)4(3)43(4)