运动合成分解方法在复合场中的应用——以2015年福建省高考理综卷第22题(物理)为例

• 作 者: 张安
• 机 构: 福建师范大学附属中学,
• 出 处: 物理教师
• 发表日期: 2015年12期
• 关键词: 复合场 分解方法 洛伦兹力 曲线运动 电场力 福建省

运动合成与分解方法是处理匀变速乃至许多复杂的曲线运动的基本方法,是高中物理教学的重要内容,也是高考考查的重点和命题热点.2015年福建省高考理科综合卷第22题(物理压轴题)正是抓住这个重要内容和命题热点,综合考查了重力、电场力、洛伦兹力、动能定理、力和运动的合成与分解、类平抛运动等知识,尤其是将合成与分解的方法隐藏于题中.其实质是让考生能在有限的答题时间内,通过对物体的直线运动和曲线运

Movement synthesis and decomposition method is to deal with uniform speed and even many complex curve movement of the basic method is an important part of high school physics teaching is also the focus of examination and proposition hot spots .2015 college entrance examination of Fujian province comprehensive volume of the first 22 questions It is precisely this important topic and the hot topics that we have taken to examine synthetically and decomposed the phenomena of gravity, electric field force, Lorentz force, kinetic energy theorem, synthesis and decomposition of force and movement, Method is hidden in the question.The essence is to allow candidates to answer questions within a limited time, through the object’s linear motion and curve