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以下幾個(gè)物理量為標(biāo)量的是( 。

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關(guān)于位移和路程,下列說法正確的是( 。

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在平直行駛的汽車內(nèi),一個(gè)乘客以自己為參照物向外觀察,他看到的下述現(xiàn)象哪個(gè)肯定是錯(cuò)誤的(  )

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汽車以10m/s的速度做勻速運(yùn)動(dòng),突然遇到緊急情況制動(dòng).假設(shè)汽車剎車后做勻減速直線運(yùn)動(dòng),加速度大小為2m/s2,則6s后汽車的速度為(  )

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物體通過兩個(gè)連續(xù)相等位移的平均速度分別為10m/s和15m/s,則物體在整個(gè)直線運(yùn)動(dòng)過程(即前述兩段位移)中的平均速度是( 。

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一、選擇題:共12小題,共48分。全選對得4分,選對但不全得2分。

1.BD    2.A    3.C    4.AD    5.AB    6.BD    7.A    8.B

9.C     10.D      11.B          12.B

二、實(shí)驗(yàn)題:共3小題,共23分。

13.(4分)BD

      14.(9分)

         (1)ACD

         (2)AD

         (3)CD

      評(píng)分標(biāo)準(zhǔn):每空3分,選對但不全得2分。

      15.(10分)

         (1)如圖所示

         (2)閉合S1、S2,讀出電壓表讀數(shù)U1

              保持S1閉合,斷開S2,讀出電壓數(shù)讀U2;

         (3)6ec8aac122bd4f6e

      三、計(jì)算題:共6小題,共79分

      16.(12分)

      受試者加速過程中

      6ec8aac122bd4f6e                                                               ①

      6ec8aac122bd4f6e                                                                 ②

      勻速過程中

      6ec8aac122bd4f6e                                                                 ③

      減速過程中

      6ec8aac122bd4f6e                                                              ④

      6ec8aac122bd4f6e

      6ec8aac122bd4f6e6ec8aac122bd4f6e                                                          ⑤

      6ec8aac122bd4f6e                                                           ⑥

      受試者10m折返跑的時(shí)間

      6ec8aac122bd4f6e                                                           ⑦

      評(píng)分標(biāo)準(zhǔn):①②③④⑦式各2分,⑤⑥式各1分。

      17.(12分)

      力F作用時(shí)

      6ec8aac122bd4f6e                                            ①

      6ec8aac122bd4f6e                                                   ②

      2s末物體的速度

      6ec8aac122bd4f6e                                                                  ③

      撤去F物體停止的過程中

      6ec8aac122bd4f6e                                                   ④

      6ec8aac122bd4f6e                                                           ⑤

      6ec8aac122bd4f6e                                                                ⑥

      6ec8aac122bd4f6e                                                                 ⑦

      評(píng)分標(biāo)準(zhǔn):①式3分,②④⑤式各2分,③⑥⑦式各1分。

      18.(12分)

      電子經(jīng)電場加速后

      6ec8aac122bd4f6e                                                             ①

      電子進(jìn)入磁場后

      6ec8aac122bd4f6e                                                                 ②

      6ec8aac122bd4f6e                                                       ③

      6ec8aac122bd4f6e                                                           ④

      評(píng)分標(biāo)準(zhǔn):①②式各3分,③式4分 ,④式2分。

      19(14分)

         (1)a棒向上運(yùn)動(dòng)時(shí)

      6ec8aac122bd4f6e                                  ①

      對于棒b

      6ec8aac122bd4f6e                                                                ②

      b棒下滑到最大速度時(shí)

      6ec8aac122bd4f6e                               ③

      對于棒b

      6ec8aac122bd4f6e                                                               ④

      6ec8aac122bd4f6e                                                             ⑤

         (2)在磁感應(yīng)強(qiáng)度增大的過程中

      6ec8aac122bd4f6e                                                            ⑥

      6ec8aac122bd4f6e                                                   

      6ec8aac122bd4f6e                                                              ⑦

      6ec8aac122bd4f6e                                                                ⑧

      h=1m                                                                     ⑨

      評(píng)分標(biāo)準(zhǔn):①式3分,②④⑤⑧⑨式各1分,③⑥⑦式各2分。

      20.(14分)

         (1)質(zhì)量為m0的物體在月球上時(shí)

          6ec8aac122bd4f6e                                                           ①

      衛(wèi)星在高度為h的軌道上運(yùn)行時(shí)

      6ec8aac122bd4f6e                                                     ②

      6ec8aac122bd4f6e                                                    ③

      (2)“嫦娥一號(hào)”噴出氣體前后

      6ec8aac122bd4f6e                                                  ④

      6ec8aac122bd4f6e

      “嫦娥一號(hào)”在下落過程中

      6ec8aac122bd4f6e                                                     ⑤

      6ec8aac122bd4f6e                                                           ⑥

      評(píng)分標(biāo)準(zhǔn):①②④⑤式各3分,③⑥式各1分。

      21.(15分)

         (1)A球與B球第一次碰撞前做勻速直線運(yùn)動(dòng)

      6ec8aac122bd4f6e                                                                 ①

      6ec8aac122bd4f6e                                                                ②

      6ec8aac122bd4f6e

      (2)A與B第一次碰撞時(shí)速度為v0

       6ec8aac122bd4f6e                                                                ③

      A與B第一次碰撞后A的速度為v1,B的速度為V1

      6ec8aac122bd4f6e                                                         ④

      6ec8aac122bd4f6e                                                   ⑤

      6ec8aac122bd4f6e6ec8aac122bd4f6e

      第一次碰撞后經(jīng)過t2時(shí)間AB兩球再次相碰

      6ec8aac122bd4f6e                                                              ⑥

      6ec8aac122bd4f6e                                                             ⑦

         (3)A、B第二次碰撞后速度分別為v2和V2

      6ec8aac122bd4f6e                                                ⑧

      6ec8aac122bd4f6e                                       ⑨

      6ec8aac122bd4f6e

      第二次碰撞后到第三次碰撞時(shí)

      6ec8aac122bd4f6e                            (11)

      A球第三次與B碰撞時(shí)

      6ec8aac122bd4f6e                  (12)

      圖象如圖所示

      評(píng)分標(biāo)準(zhǔn):①②④⑤式各2分,③⑥⑦式各1分,(3)問圖線4分,只按圖給分。

       

       


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