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【考情研究】一、功、功率的理解与计算【考点展示】1.恒力做功的公式:W=Flcosα2.功率(1)平均功率:P=W/t=f vcosα(2)瞬时功率:P=Fvcosα(α为F与v的夹角)3.机车的启动问题解决问题的关键是明确所研究的问题处
[Test research] a power and power understanding and calculation [test site show] 1. Constant force work formula: W = Flcosα2. Power (1) Average power: P = W / t = f vcosα (2) Instantaneous power : P = Fvcosα (α is the angle between F and v) 3. The starting problem of locomotive The key to solving the problem is to clarify the problem under study