GCSE CCEA Physics: Mind Map Quick Memorisation | GCSE CCEA 物理：思维导图速记

📚 GCSE CCEA Physics: Mind Map Quick Memorisation | GCSE CCEA 物理：思维导图速记

Master GCSE CCEA Physics by building a mental mind map of the core topics: motion, forces, energy, radioactivity, waves, electricity, magnetism and space. This bilingual guide pairs each key concept in English and Chinese to speed up memorisation and ensure exam confidence.

通过构建核心主题的思维导图来掌握GCSE CCEA物理：运动、力、能量、放射性、波、电学、磁学和太空物理。本双语指南对每个关键概念进行中英配对，帮助你快速记忆并自信应对考试。

1. Motion and Forces | 运动与力

In CCEA Physics, motion is described by speed, velocity and acceleration. Speed is a scalar quantity; velocity is a vector. The average speed of an object can be calculated as total distance divided by time.

v = d / t

平均速度 = 总路程 / 时间，单位 m/s。速度是矢量，包含方向。

Acceleration is the rate of change of velocity. If an object accelerates uniformly from initial velocity u to final velocity v in time t, the acceleration is given by:

a = (v – u) / t

加速度 = (末速度 – 初速度) / 时间，单位 m/s²。

Newton’s Second Law states that the resultant force acting on an object is equal to its mass multiplied by its acceleration.

F = m a

牛顿第二定律：合力 = 质量 × 加速度。力的单位是牛顿 (N)。

The weight of an object is the gravitational force acting on it, calculated by multiplying mass by gravitational field strength g (on Earth g ≈ 10 N/kg).

W = m g

重量 = 质量 × 重力场强度。重量是力，单位牛顿；质量单位千克。

A moment is the turning effect of a force. It depends on the size of the force and the perpendicular distance from the pivot.

M = F d

力矩 = 力 × 支点的垂直距离，单位 N m。对杠杆平衡，顺时针力矩之和 = 逆时针力矩之和。

Momentum p is the product of mass and velocity. The rate of change of momentum is equal to the resultant force.

p = m v
F = Δp / t

动量 = 质量 × 速度，单位 kg m/s。力等于动量变化率，这一原理用于解释汽车安全设计。

Safety features such as seat belts, air bags and crumple zones reduce the force on passengers during a collision by increasing the time over which the change in momentum occurs.

• Seat belts stretch slightly, extending stopping time.
• Air bags provide a cushion, increasing the time for the head to stop.
• Crumple zones deform progressively, increasing the time over which the car stops.

安全带拉伸、安全气囊缓冲、溃缩区逐级变形，都能延长碰撞时间，从而减小作用力。

• 安全带轻微拉伸，延长减速时间。
• 安全气囊提供缓冲，增大头部停止时间。
• 溃缩区逐步变形，增加汽车停止所需时间。

2.

Published by TutorHao | GCSE Physics Revision Series | aleveler.com

更多咨询请联系16621398022（同微信）