程序演示
import turtle
import math
colors = ["blue", "black", "brown", "red", "yellow",
"green", "orange", "beige", "turquoise", "pink"]
turtle.setup(800, 800) # 设置窗口尺寸
t_line = turtle.Turtle()
t_line.pencolor('red')
t_line.pensize(5)
t_line.speed(0)
t_line.down()
t_line.goto(-400,0)
t_line.goto(400,0)
t_line.hideturtle()
h = 20 # 球的高度
g = 9.8 # 重力加速度
k = 10 # 放大系数，为了图形显示
h,g = h*k,g*k # 放大倍数，便于显示
n = 1 # 实验次数
v = float(input('请输入' colors[(n-1) % 10] '球的水平初速度：')) # 球的水平初速度 ,建议测试10,20,30,300
while v!=0:
v = v*k # 放大倍数，便于显示
y = h
t_ball = turtle.Turtle()
t_ball.speed(0)
t_ball.shape('circle')
t_ball.color(colors[(n-1)])
t_ball.up()
t_ball.goto(-400, h)
t_ball.down()
t = 0
while y>0:
y=h-0.5*g*t*t
x=-400 v*t
t_ball.goto(x,y)
turtle.delay(10)
t=t 0.01
n = n 1 # 实验次数增加
v = float(input('请输入球的水平初速度：')) # 球的水平初速度
turtle.mainloop()
