IB Science: Essential Formula Handbook | IB 科学：核心公式汇总手册

📚 IB Science: Essential Formula Handbook | IB 科学：核心公式汇总手册

Mastering the essential formulas is key to success in IB sciences. This handbook provides a curated compilation of the most important equations from IB Physics and IB Chemistry, covering mechanics, thermal physics, waves, electricity, atomic physics, stoichiometry, energetics, equilibrium, and data analysis. Understanding when and how to apply these formulas will strengthen your problem-solving skills and prepare you for internal assessments and exams.

掌握核心公式是 IB 科学成功的关键。本手册精心汇编了 IB 物理和 IB 化学中最重要的方程式，涵盖力学、热物理、波动、电学、原子物理、化学计量、能量学、平衡和数据分析。理解何时以及如何应用这些公式将增强你的解题能力，为内部评估和考试做好准备。

1. Mechanics – Motion, Forces and Energy | 力学——运动、力与能量

Mechanics is the cornerstone of IB Physics, encompassing kinematics, Newton’s laws, work, energy, and momentum. These formulas allow you to analyse motion and interactions systematically.

力学是 IB 物理的基石，涵盖运动学、牛顿定律、功、能量和动量。这些公式使你能够系统地分析运动和相互作用。

v = u + at

The final velocity v equals initial velocity u plus acceleration a multiplied by time t, valid for constant acceleration.

末速度 v 等于初速度 u 加上加速度 a 乘以时间 t，适用于匀加速运动。

s = ut + ½at²

Displacement s under uniform acceleration is the sum of ut and half the product of acceleration and the square of time.

匀加速下位移 s 等于 ut 加上加速度与时间平方乘积的一半。

v² = u² + 2as

Relates final velocity squared to initial velocity squared, acceleration, and displacement without involving time directly.

该式将末速度平方与初速度平方、加速度和位移关联起来，不直接涉及时间。

s = ½(u + v)t

Displacement equals average velocity multiplied by time; useful when acceleration is constant but not explicitly given.

位移等于平均速度乘以

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