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高一物理必修一中,第三章4、5节内容是力的合成与分解,足以看出力的合成与分解是解决力学问题的基础.力的合成与分解不仅能解决相应的物理问题,更能解决生活中遇到的一系列问题.一、理解标量和矢量矢量:既有大小又有方向的量.相加时遵循平行四边形定则、三角形法则等.标量:只有大小没有方向的量.求和时按算术法则相加.力是矢量,所以力的合成与分解应选择平行四边形定则、三角形法则等其他方法..
Physics compulsory one high, the content of the third chapter 4,5 section is the synthesis and decomposition of force, enough to see that the synthesis and decomposition of force is the basis for solving mechanics problems.The synthesis and decomposition of force can not only solve the corresponding physical problems, but also Can solve a series of problems encountered in life.A, understand the scalar and vector vector: both the size and direction of the amount.At the same time follow the parallelogram rules, the triangle law, etc. Scalar: only the size of the amount of no direction. When summation is added according to arithmetic rule, force is vector, so the synthesis and decomposition of force should choose parallelogram, triangular law and other methods.