在讲述斜抛物体运动的课堂教学中,我们事先将编好的显示斜抛运动图象的程序贮存在软盘中。使用时,打开计算机,调出程序,屏幕上显示出抛物线的直角坐标图象。而斜抛运动的初速度V_0和抛射角θ都由键盘输入语句输入。首先,V_0输入40,抛射角θ依次输入20、30、45、60、70,这时图象上依次显示出质点的五次抛射过程和轨迹。可以很清楚 In class teaching about the movement of oblique objects, we first stored a program for displaying oblique motion pictures in a floppy disk. When used, turn on the computer, call up the program, and display a parabolic rectangular coordinate image on the screen. The initial velocity V_0 and the ejection angle θ of the slanting motion are input by the keyboard input sentence. First of all, V_0 is input 40, and the projection angle θ is input 20, 30, 45, 60, 70 in sequence. At this time, the five projectile processes and trajectories of the particle are sequentially displayed on the image. Can be very clear