纵观历年高考物理试卷,运用功能关系和动量关系来解答的问题,不仅年年有,而且运用率相当高,今年高考物理卷中尤其如此。因此对这个热点的研究就显得十分重要。功能关系包括机械能守恒定律和动能定理。如果有其他形式的能量间相互转化或其他形式的能量和内能相互转化,还需要用能量守恒定律。如果没有摩擦和介质阻力,物体只发 Throughout the years of college entrance examination physics papers, the use of functional relationships and momentum relations to answer questions, not only every year, but the utilization rate is quite high, especially this year’s college entrance examination physical volume. Therefore, it is very important to study this hotspot. Functional relationships include the conservation of mechanical energy and the kinetic energy theorem. If there are other forms of energy interconversion or other forms of energy and internal energy conversion, it is also necessary to use the law of conservation of energy. If there is no friction and medium resistance, the object only