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发表于 2019-9-13 23:46:11 | 显示全部楼层 |阅读模式
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1???????????????? ?C?

A???????????????????????????????????? B. ???????????????????

C. ?????????????????????????????????????????????????

D. ??????????????????????????????

2???????????????????? ?C? A. ?????????????? B. ?????????

C. ????????????? D. ???????

3??????????????????A???????ABC?ADC??????????????????????( A

)

A???C???

B???D???

4??????????????????????????( D )

A.C????????? D???????????????

5????????????????????? ( C )

A.?????????? B.?????????????? C.???????????????? D.????????????

6??????????(D )

A.?????????????????? B.????????????????? C.????????????

D.?????????????????????????

7?2008?9?25??21?10???????????????????????7?????????????????????????90????( C )

A?21?10??90??????????????

B????????????????????0

C???????????????0????????????????0 D??????????????????????????????? 8?????????????????? C ?A?????????????

B??????????????????????????

C?????????????????????????? D?????????????????????

9???????????????????????????????????????????????????????( C )

A??????? B?????????? C??????? D??????????

10??????????????????????????????v?t?????????????????( C

)

A???????????????? B???????????????? C??2s?????????? D??2s????????

11??????????????????????????????????v1?????????v2??????????????????( D )

A.

v1?v2v1?v2

2

2

B.

v1?v2v1?v2

2

22v1v2

v1?v2

C?0?

v1?v2

v1?v2

D?0?

12???a=5m/s2???????????????????? ? A ?A.???1s?????????5m/sB.?2???????1s?????5m/sC??1s??????1s?????5m/s

D.?2s??????1s?????2?

13?????????????????( D )

A??????????????????? B???????????????????? C????????????????????

D??????????????????????14???1-1???????????????????????????

?????????????????????? ?C? A?A????????? B?A??????? C?B????????? D?B???????

15?????????????????????????????v1=40km/h?????????????v2=60km/h????????????????v1=40km/h????????????v2=60km/h?????????????????????????????( C)

A.v?=v? B.v?>v? C.v?<v? D.????????????

???(???? ?60?)

?????(?4???16?5??17?4??18?5??19?6???20????????????)

16????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????1500m/s?????????????????????????8s??????????????____6000____m. 17????????R????????????????___0_____????_____2?R___????????1/4??????___?R/2____??????____2R _____?

18?????v-t???????? ?????????????? 30m/s?????___-1m/s_ __??20s??????___-1m/s __??30s?????____ 0 ___?

19?????????????????????????????????????????????????????????0.02s?????????????????????????????????????__?????? ______??A?C??????????????

____0.18m/s

2

2

____m/s??C????????????______0.39m/s(0.40m/s???) ______m/s.???????????????

?????(???2????20???????????????????????????????

?????????????????????????????)

20?(10?)???????O??????x??????? ??????????????????????????

(1)(2)????3???????????3?? (3)????4????????????4??

???(1)3m/s (2)1m/s2 (3)3.5m/s ???(1)v2?3m/s

?v4?2

(2)a?m/s2?1m/s2

?t3?1(3)?x4?3.5m?t?1s?v4?

?x4

t4

?3.5m/s.

21?(10?)14?????????????????10s????20m/s??5m/s??10s?????????????

??????v =?15m/s? a =?1.5m/s

???????????

2 ???????

1.5m/s2

????????????

?????????1????????

????????????????

?????

1??????????????( ) A??????????????????? B??????????????????? C??????????????????? D???????????????

2?(????08?09?????????)2008?9?25??21?10???????????????????????7?????????????????????????90????( )

A?21?10??90?????????????? B????????????????????0

C???????????????0????????????????0 D???????????????????????????????

3???????????????????????????????????????????????????????( )

A??????? B?????????? C??????? D?????????? ?

4?(??????09?10?????????)?????????????????A???????ABC?ADC??????????????????????(

)

A??? C???

B???D???

5??????????????????????????????v?t?????????????????( )

A???????????????? B???????????????? C??2s?????????? D??2s????????

6??????????????????????????????????v1?????????v2??????????????????( )

A.

v1?v2v1?v2v1?v2v1?v2

? B. 2222

v1?v22v1v2

C?0D?0?v1?v2v1?v2

7?(????09?10?????????)????????????????( ) A??????????????????? B???????????????????? C???????????????????? D??????????????????????

8??????????????????????????( )

A.B????????? C?????????

D???????????????

9???????(??)????????????????????????????????????????????????????????????????????????????????3.0108m/s?????????????340m/s.??( )

A?????????????????

B??????????????????????????0.3s C??????????????????????????0.3s D??????????????

10???????????????????????????????????????????????????????1h?????7.2km????????????( )

A?7.2km/h B?3.6km/h C?1m/sD??????????

???(???? ?60?)

?????(?4??????6???24????????????)

11??????????????________????________?????????????????50Hz????????????________s???????????????________V??????????________V.

12????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????1500m/s?????????????????????????8s??????????????________m.

13?????????????????????????????????????????????????????????0.02s?????????????????????????????????????________??A?C??????????????________m/s??C????????????

____________m/s.

14???????????????80km/h??????????????????????????????????????L?????????A?B??????????????????????????????????????(??????

???)???????????????????????????????t????????????????????????????????????????C???????????????????????????

(1)??????????????????v?________.

(2)?L?5m??t?0.3s??????________???(?????

)

????????(???4????36????????????????????????????????????????????????????????????)

15?(8?)??????????72km/h???????????????????????????????????????4s??????????????????????????????

16?(8?)??????????????????????????????????????????????????????????????????????????????????????

(1)??????????????????????? (2)??????????

(3)???????????????? (4)??????????xm?????

17?(10?)???????O??????x??????? ??????????????????????????

(1)(2)????3?????????? (3)????4???????????

18?(10?)??????????????????????????????????????????????????????????????5s??????????????10s????????3s?????????????????????????????????????????????????????????????110km/h(????)????????????340m/s.

??? ?????? 1?B2?AC

3?C??????????????????????????????????????????????????????????????????????C

????

4?A 5?BC??????????????????????????A?B???2s??????????????????????C?D??

6?D????????????????????2s????????v?

2sss

v1v2

2v1v2?v1?v2

7?D

????????????????

??????1??????

?????

1????????????

A?????????????B?????????????????? C????????????????? D??????????????????????????????????

2??????????????

A?????????B?????????????? C????????????????????????????? D????????????????????????

3?????????????????????

A???????????3m/s?????1s????3m

B?????1s???????3m/s??????1s???????3m

C???????????????3m/s?????1s???????3m

D???????????????????3m/s???????????????????3m/s

4????????????????????????

A???????10s???????5m/s

B???????????????5m/s????????????1s??????5m

C????????????????5m/s

D???????????????????????????????

5????76km/h?????????????600m?s????????????

A?76km/h????? B?76km/h????? C?600m/s????? D?600m/s?????

6??????????????A?B????v1??B?C????v2??AB?BC????????????? ? A?(v1?v2)/2 B?(v1?v2)/2 C?(v1?v2)/(v1?v2) D?2v1v2/(v1?v2)

7????A?B????????????????????? ?

A??A?????10m/s???????

B??B??????5m?s????A???

C???B???3s????10m

D???B???3s????10m

8??????t?0??????????????????????????

A?t?1s???????????? B?t?2s????????????

C?t?2s????????D?t?4s???????

9????????????????????????? ?

10??????????????????2m/s2?????????????????????????

A??????????????2m/sB????????????2s????2m/s

C??????????????????2m?s D??????????????????????2m?s

11??????????????? ?

A????????????? B?????????????

C????????????????????? D???????????????????

12??????????? ?

A?????????????????B??????????????????????

C??????????????? D?????????????

13????????????????????????????????????????? ?

A??????????????????? B???????????????????

C???????????D???????????

?????

14????????????????????????????????1s??????

???______??????????????3s???????????______????

15?????????????______???_____??????????______V????

????50Hz?????______S??????????????_____????????

______?????????_____??????_____?????_____?????

16?????????v?t???0?2s?????_______?2?4s?????______?4?

5s?????__________?

17?????0.02s???????????????800m/s??????300m/s???????????????______?

18.??????10 m/s???????????????????x(m)?????????4 m/s????????????????????????????-6 m/s2????????????????????x????_____m?

19?????????????????????A?B?C?????AB=6 m?BC=10 m?????AB?BC?????????2 s??????A?B?C?????????_______?________?_________?

20. ???????10 m/s?????????????????????-5m/s2?????????

?????3s????? ?

21. ???????????5????????1???????????3???2???????1m

???????????2????????? m,????????? s?

?????

22?????????????????????????????????????

?l?????????

?2????????????????????????

23???????????????????????4m????????????????????????

???10 m??????????10 s????1????????????????2????????????????3???????????

24????????????????????1 s????????????7/16????????g?10 m/s2

???????????????????

?????

1??????????????( )

A???????????????????B???????????????????

C???????????????????D???????????????

2?(????08?09?????????)2008?9?25??21?10???????????????????????7?????????????????????????90????( )

A?21?10??90??????????????

B????????????????????0

C???????????????0????????????????0

D???????????????????????????????

3???????????????????????????????????????????????????????( )

A??????? B?????????? C??????? D???????????

4?(??????09?10?????????)?????????????????A???????ABC?ADC??????????????????????( )

A??? B??? C??? D???

5??????????????????????????????v?t?????????????????( )

A????????????????B????????????????

C??2s?????????? D??2s????????

6??????????????????????????????????v1?????????v2??????????????????( )

v1?v2v1?v2v1?v2v1?v2v1?v22v1v2? B.? C?0? D?0?2222v1?v2v1?v2

7?(????09?10?????????)????????????????( )

A???????????????????B????????????????????

C???????????????????? D??????????????????????

8

A.C????????? D???????????????

9???????(??)????????????????????????????????????????????????????????????????????????????????3.0108m/s?????????????340m/s.??( )

A?????????????????B??????????????????????????0.3s

C??????????????????????????0.3sD??????????????

10???????????????????????????????????????????????????????1h?????7.2km????????????( )

A?7.2km/h B?3.6km/h C?1m/s D??????????

?????(?4??????6???24????????????)

11??????????????________????________?????????????????50Hz????????????________s???????????????________V??????????________V.

12????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????1500m/s?????????????????????????8s??????????????________m.

13?????????????????????????????????????????????????????????0.02s?????????????????????????????????????________??A?C??????????????________m/s??C????????????

____________m/s.

14???????????????80km/h??????????????????????????

????????????L?????????A?B??????????????????????????????????????(?????????)???????????????????????????????t????????????????????????????????????????C???????????????????????????

(1)??????????????????v?________.

(2)?L?5m??t?0.3s??????________???(?????

)

????????(???4????36??????????????????????????????

??????????????????????????????)

15?(8?)??????????72km/h???????????????????????????????????????4s??????????????????????????????

16?(8?)???????????????????????????????????????????

???????????????????????????????????????????

(1)???????????????????????

(2)??????????

(3)????????????????

(4)??????????xm?????

17

(1)????2???????????

18?(10?)??????????????????????????????????????????????????????????????5s??????????????10s????????3s?????????????????????????????????????????????????????????????110km/h(????)????????????340m/s.

?????

??????1??????

1. A? 2.C? 3.B? 4.AC? 5.AC? 6.D? 7.ABD? 8.BD? 9.BC? 10.BC ? 11.A? 12.ABC? 13.ABC

14. 0~2s ?2~4s ?15. ??????4?6 ?0.02??????????????

16. 1.5m/s2

0 ?3m/s2? 17. ?2.5?104m/s2?18. 3?19. 2m/s 4m/s 6m/s?20. 10m ?

21. 3.2 ?0.2 ? 22. ?1?2s?4s?2?1s?3s??0.5m?23. 0.5m/s2 2/3 m/s2 2m/s?24. 45m

????????????????????

??????1?B2?AC3?C??????????????????????????????????????????????????????????????????????C????

4?A 5?BC??????????????????????????A?B???2s??????????????????????C?D? 6?D????????????????????2s?????

2v1v22s???v?? 7?D ?8?D???????????????????????????. ssv1?v2?v1v2

x1009?C ???????????????????t?s?0.3s.????????????????????340

x7.2????? 10?B?????????????????????????????2h?v???3.6km/h. t2

??????11?????????????0.02?4?6?22012????6000

L13?????????? 0.18m/s 0.39m/s(0.40m/s???) 14????(1) (2)?? ?t

?????

15 ?????5m/s2???????????????v0?72km/h?20m/s????v?0????t?

v?v00?2024s?????????????????????a??5m/s2.??????????????t4

?????????????????5m/s.

16????(1)???????????? (2)??????? (3)t2???t4??????? (4)????????

17????(1)3m/s (2)1m/s2 (3)3.5m/s

???(1)v2?3m/s (2)a??v4?22?x?m/s?1m/s2(3)?x4?3.5m?t?1s?v4??3.5m/s. ?t3?1t4

18????(1)3m/s (2)1m/s2 (3)3.5m/s

?v4?22?x4???(1)v2?3m/s (2)a???1m/s2 (3)?x4?3.5m?t?1s?v4??

3.5m/s. ?t3?1t4


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