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🎯 抛体运动计算器Projectile Motion Calculator
根据初速度、发射角和初始高度计算射程、最大高度和飞行时间（忽略空气阻力）。Range, maximum height and flight time from launch speed, angle and height (no air resistance).
使用说明与常见问题How-to & FAQ
「抛体运动计算器」是什么？What is the Projectile Motion Calculator?
根据初速度、发射角和初始高度计算射程、最大高度和飞行时间（忽略空气阻力）。Range, maximum height and flight time from launch speed, angle and height (no air resistance).
如何使用「抛体运动计算器」？How do I use the Projectile Motion Calculator?
在「抛体运动计算器」中，填写「初速度 m/s」、「角度°」、「初始高度 m」、「g」等参数，结果会随输入实时计算并显示在下方。In the Projectile Motion Calculator: Fill in "Speed m/s", "Angle °", "Launch height m", "g m/s²"; results are recalculated instantly as you type.
计算结果可以用于作业或工程吗？Can I use the results for homework or engineering?
「抛体运动计算器」使用教科书标准公式，并列出所用公式和中间值，适合学习和估算核对；涉及安全的工程设计请以规范和实测为准。The Projectile Motion Calculator uses standard textbook formulas and shows them, which is good for learning and checking estimates; for safety-critical engineering follow codes and measured values.
「抛体运动计算器」免费吗？需要注册吗？Is the Projectile Motion Calculator free? Do I need an account?
「抛体运动计算器」完全免费，无需注册或安装，打开网页即可使用，手机和电脑都能用；输入的内容只在你的浏览器本地处理。The Projectile Motion Calculator is completely free with no sign-up or install and works on phones and desktops; what you enter is processed only in your browser.