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牛顿运动定律是高考试题的必考点,既可单独考查,也可与其他力学规律、电学规律综合考查,题型有选择题、计算题和实验题.下面我们通过例题来解读牛顿运动定律这个重要的考点.一、加速度与合外力的关系物体的加速度与所受合外力之间存在“因果性”——合外力是原因,加速度是结果,合外力决定着加速度;“瞬时性”——加速度与合外力同时产生、同时消失、同时变化;“同向性”——加速度与合外力的方向总是相同的.
Newton’s law of motion is the test of the college entrance examination test points, either alone or with other laws of mechanics, electrical laws of the comprehensive examination of the questions have multiple-choice questions, calculation problems and experimental questions below we interpret Newton’s laws of motion through the example of this important Of the test site. First, the relationship between acceleration and co-force There is a “causal” between the acceleration of the object and the co-force encountered - together with the external force is the reason, acceleration is the result, together with the external force determines the acceleration; “ ”- Acceleration and co-generation at the same time, disappear at the same time change; “ co-direction ”- the direction of acceleration and co-force is always the same.