牛頓第二定律的英語原文是：Newton's second law of motion.
具體來說，其原文表述為："The force required to cause a body to accelerate in a given direction is directly proportional to the mass of the body multiplied by the acceleration desired."
即力使物體在特定方向上產生加速度，該力的大小與物體質量成正比，與所需加速度的大小成正比。
牛頓第二定律的英語原文為：F=ma，其中F代表物體所受的外力，m代表物體的質量，a代表物體的加速度。
Q: What is the acceleration of a 1kg object that is pushed with a force of 2N?
A: According to Newton's second law, F=ma, the acceleration of a 1kg object pushed with a force of 2N would be a=F/m=2N/1kg=2m/s^2.
希望這個例子能幫助你理解牛頓第二定律。
