2017 AP Physics C物理C—Mechanics力學(xué)真題系列之Practice Exam選擇題免費(fèi)下載

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2017 AP Physics C Mechanics Practice Exam Multiple Choices Free Download

2017 AP 物理C力學(xué)模考選擇題部分免費(fèi)下載

此套題僅 p II含有簡(jiǎn)答題，

共計(jì)時(shí)45分鐘，共35題

占總分50%

可以使用計(jì)算器

僅可使用鉛筆

考試時(shí)會(huì)提供常用公式列表

部分真題預(yù)覽：

5）Two identical, unlabeled boxes are transported to an orbiting space station. The astronauts know that one box is filled with a light sample of ants for an experiment, and the other is filled with heavy tools for repairs. How can the astronauts tell, without opening the boxes, which box has the tools?

1. Weigh each box on a spring scale. The box with the tools will have a higher reading.
2. Shake each box. The box with the tools will be harder to move back and forth.
3. Push each box. The box with the tools will travel farther before it stops.
4. Place each box on opposite sides of a balance. The box on the side that goes down lower will be the box with the tools.
5. Toss each box straight up. The box with the tools will go higher before coming back down.

8）A ball of mass m is dropped from rest from a height h and collides elastically with the floor, rebounding to its original height. What is the magnitude of the average force applied by the floor on the ball during the time the ball is in contact with the floor?

1. Zero
2. mg
3. 2mg
4. 4mg
5. It cannot be determined without knowing the length of time that the ball is in contact with the floor.

17 )Which of the following properties of the two-disk system must be conserved between the time the second disk is dropped on the first disk and the time that the two disks begin rotating with the same speed?

1. Kinetic energy only
2. Angular momentum only
3. Both kinetic energy and angular momentum
4. Neither kinetic energy nor angular momentum
5. It cannot be determined without knowing the nature of the forces between the two disks.