重力球追踪
地位
开始之前您需要什么
Python3
Matplotlib
脾气暴躁的
虚拟环境（推荐）
假设
无空气阻力
This program had not been developed to consider the air resistance.
没有地面
This program had not been developed to consider the Ground.
The ball will keep going through the own way, both not stoping or bouncing on the ground.
There is no GROUND to give any force to the ball.
怎么跑
1. clone the repository into your desktop.
2. make a py
