2009 AP Physics C物理C—Mechanics力學(xué)真題系列之簡(jiǎn)答題免費(fèi)下載

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2009 AP Physics C Mechanics Free-Response Questions Free Download

2009 AP 物理C力學(xué)簡(jiǎn)答題部分免費(fèi)下載

此套題僅?p II含有簡(jiǎn)答題，

共計(jì)時(shí)45分鐘，共3題

占總分50%

每道大題可能含有不同數(shù)量的小題

可以使用計(jì)算器

部分真題預(yù)覽：

1）A 3.0 kg object is moving along the x-axis in a region where its potential energy as a function of x is given as U(x) = 4.0x² , where U is in joules and x is in meters. When the object passes the point x = -0.50 m, its velocity is +2.0 m/s. All forces acting on the object are conservative.

1. Calculate the total mechanical energy of the object.
2. Calculate the x-coordinate of any points at which the object has zero kinetic energy.
3. Calculate the magnitude of the momentum of the object at x = 0.60 m.
4. Calculate the magnitude of the acceleration of the object as it passes x = 0.60 m.
5. On the axes below, sketch graphs of the object’s position x versus time t and kinetic energy K versus time t. Assume that x = 0 at time t = 0 . The two graphs should cover the same time interval and use the same scale on the horizontal axes.