高考分值:15分名师指要机械能考查的重点是以功和功率为核心的概念,以及对动能定理、功能关系、机械能守恒定律的综合应用。注重对基本概念和基本规律的考查,试题与牛顿运动定律相结合,通过匀变速直线运动、变加速直线运动、多过程直线运动、平抛运动、圆周运动、往复运动等运动模型与生产、生活紧密联系。难点突破1.功的计算 Entrance Score: 15 minutes Teacher means to focus on mechanical energy test is the concept of power and power as the core, as well as the kinetic energy theorem, functional relationships, the comprehensive application of the law of conservation of mechanical energy. Pay attention to the basic concepts and basic rules of the test questions and Newton’s law of combining, through the uniform speed linear motion, variable speed linear motion, multi-process linear motion, flat throw motion, circular motion, reciprocating motion model and production, life Closely linked. Difficult breakthrough 1. The calculation of power