AP Physics选择题答案下载

　　下面介绍的是AP Physics选择题答案下载，建议大家下载完整版AP Physics选择题真题答案及解析PDF格式，小马过河祝大家都能取得优异成绩。

　　历年AP Physics选择题部分内容：

　　7. Which of the following statements about the block is correct?

　　(A) At x = 0, its velocity is zero.

　　(B) At x = 0, its acceleration is at a maximum.

　　(C) At x = A, its displacement is at a maximum.

　　(D) At x = A, its velocity is at a maximum.

　　(E) At x = A, its acceleration is zero.

　　8. Which of the following statements about energy is correct?

　　(A) The potential energy of the spring is at a minimum at x = 0.

　　(B) The potential energy of the Spring is at a minimum at x = A.

　　(C) The kinetic energy of the block is at a minimum at x =0.

　　(D) The kinetic energy of the block is at a maximum at x = A.

　　(E) The kinetic energy of the block is always equal to the potential energy of the spring.

　　9 Two 0.60-kilogram objects are connected by a thread that passes over a light, frictionless pulley, as shown above. The objects are initially held at rest. If a third object with a mass of 0.30 kilogram is added on top of one of the 0.60-kilogram objects as shown and the objects are released, the magnitude of the acceleration of the 0.30-kilogram object is most nearly

　　(A) 10.0 m/s2

　　(B) 6.0 m/s2

　　(C) 3.0 m/s2

　　(D) 2.0 m/s2

　　(E) 1.0 m/s2

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