高一寒假作业理综答案.doc

()(10) 20151301. a bc d2. a b. c. d.3. 5s10m/s a10s100mb10s100mc2m/sd2m/s4. ()fab ( )aa4 ba6c b3 db2225. 6. oaoaabbofaaa abcd7. (1)50 hz_(2)abcdefg7abx_m(3) c_m/s_m/s2 ( )(4)50hz_8. dis1_dis2. oa_ab abcd9. 4 s20 m/s10 s5s(1)(2)16 s(3)10. 10s1800m(g10ms) ?11. abl15mv2 m/sma0.8=370g10ms2sin370=0.6,cos370=0.8 1ab221. c2. c3. ad4. ac5. d6. c7. 10.02s 20.3010m 30.060m/s 0.20m/s48. 1 2 c9. (1) a1v1a1t1a1v1/t1-2220m/s25 m/s24(2) a2v2v1a2t2a2v2?v14 m/s2t2t16 st32 sv3v1a2t312 m/s.(3) x=v(t1 +t3)/2+vt2=290m10. s?11. 1t=10 s25m12at,a?36m/s2t+mg=mat=2.6mg 21. a b. c. d.2. abcd3. ab )a3 b4 c6 d55. a. b. c. d. 6. a. b. c. d. 7.(1) a. 6vb. c. d. (2) oabcdefg4 d fg cm()1 abcd2 aa bbca db3o20mo25mb a25m25m b65m25m c25m-25m d65m-25m4 a80km/hb110km/hc220km/hd900km/h5( )abcd6v-t abcd7o1 m/so7 m/so a5.5 m/s b5m/s c4 m/s d3.5 m/s8abvc2vxabxbc( )a11 b12 c13 d14290.5m/s1s a0.5m/s b1s0.5m/sc1s0.5m/s d0.510ababxt at1abbt1t2bct1t2badt1t2ba1110m/s15m2_s(g=10ms)12(1)_()_v.(2)50ava2_m/sa=_m/s1372km/h2s10m/s1 25s141227mab2sb15m/s1a 2a2151280 mg10 m/s(1) (2)1 s1 s1( )abcd2bbaca a b cd 3a bcd4 a bcd01805afaba( )a2 b3 c4 d56abcfb aab bbc ca da 7fg af bf+g cg df2?g28gffg a.fe. f. g. 9a b 100n/m 200n/m 6cm4cm g10n aa4nb6nba10nb10nca7cmb4.5cmda6.4cmb4.3cm10gf1 f2 11lf,1 2 30.20m, 12. abgacabab13m1oobbm2oa372(sin370.6cos370.8tan370.75g10 m/s)(1)oaob(2)(3)m24 kg0.3m114a40nb20nabbbf=32na.15v- 42rf=krvkk=3.410ns/m332=1.010kg/mg=10m/sr=0.10mm104=401. a bc d2. ( )abcd3ama( )22aga bma cmg2a2 dm(ga)4( )abcd5.2 m0.5 m( )a5 b6 c8 d106.pacbpc( )apababcbcdc7.abafabfb afafb bfafbcfafb dfafb8.af a. b.a2014-2015(6)(word,)1. abcd2. v1=10m/s,v2=15m/s ,( )a13.75 m/s b12.5 m/s c12 m/s d11.75 m/s3. tvx axv t bxv t2cxv t2 dxv t24. 5. f90 a f bf c 2f d 3f6. 0t0 abt0ct0d8.abcd50.1s012345()(1)a_m/s(2)a1_m/s(3)a_ 29.abcd|ab|=|cd|aa1a2dcaba2a3da1a26m/s4m/sa310.x=16mv=10 m/s=0.5(g10 m/s2)11.m30m3012kk221. d 2.c 3.d 4.c 5.b 6.d7.8.1)3.1 (2)0.46 (3)1?s?at 2?s?at2?a?v?s2?s16.11?3.00?10?2m/s2?3.11m/s222t(0.1) xs1?s26.11?3.00?10?2m/s?0.46m/st2t2?0.1210.46m/s3s?nat 2?s?nat2s5?s2?3at2?s5?s2?3at2?6.11?10?2m?3?3.1?0.01m?15.41?10?2m?15.41cm9.t1t21122xac?xbd=a2t1?a2t2 22t1?t2t3t4?t1?t3 vm?a3t3?a2t2 10. 2.3s2. f=?mg?ma a=5m/st1? 2sx1?v?2s a12at1?10m 2x