高中物理(必修本)第一册302页27题如下:射击时质量是50g的子弹在枪膛内运行0.010s,速度由零达到500m/s,求枪对人的作用力的大小和方向。课本340页给出枪对人的作用力的大小为2500N。笔者认为这道习题本身就存在问题,而且其答案也不科学。理由及解析如下:根据牛顿第三定律,射击过程中枪对子弹的平均 High school physics (required) The first volume of the 302 questions in the first volume is as follows: The bullet with a mass of 50g when firing is operated within the barrel for 0.010s, and the speed is from zero to 500m/s. The magnitude and direction of the force of the gun on the person are demanded. Textbook 340 gives the size of the force of the gun to human being 2500N. The author believes that this problem has its own problems, and its answer is not scientific. Reasons and explanations are as follows: According to Newton’s third law, the average gun-to-bullet ratio during firing