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dec高一物理

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4th - 11th Grade

Used 2+ times

dec高一物理
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6 questions

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1.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

一列火车开始以200km/h 行驶了 200km,再以 200km/h 又行驶了 100km。请问这列火车全程的平均速度是多少?

100

133.3

200

233.3

2.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

当加速度方向与初速度方向相同时,物体在()

当加速度方向与初速度方向相反时,物体在()

加速,减速

减速,加速

静止,加速

加速,静止

3.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

一辆巴士在刹车时,速度在 3s内从 20m/s减小到。请问巴士的平均加速度是多大?

-5

+5

-6.67

+6.67

4.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Media Image

a

b

c

d

5.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

一辆汽车向东行驶 30km,又向西行驶 40km,则汽车的行驶路程和位移分别是多少?

70,10

10,70

-70,10

70,-10

6.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

某人向北跑了12m,再往东跑了 16m,花费 20s,计算速率和速度。

1, 1.4

1.4, 1

-1.4, 1

1, -1.4

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