Momentum Revision for IGCSE AQA Physics | IGCSE AQA 物理：动量 考点精讲

📚 Momentum Revision for IGCSE AQA Physics | IGCSE AQA 物理：动量 考点精讲

Momentum is a fundamental concept in IGCSE AQA Physics that helps explain how objects move and interact. Understanding momentum, its conservation, and its link to force is essential for solving collision and explosion problems. This revision guide covers all key points you need for the exam, with clear examples and tips.

动量是 IGCSE AQA 物理学中的基础概念，它能解释物体如何运动和相互作用。理解动量、动量守恒及其与力的关系对于解决碰撞和爆炸问题至关重要。本考点精讲涵盖考试所需的所有要点，并提供清晰的示例和技巧。

1. What is Momentum? | 什么是动量？

Momentum is a property of moving objects. It is defined as the product of an object’s mass and its velocity. The symbol for momentum is p.

动量是运动物体的一种属性。它被定义为物体的质量与其速度的乘积。动量的符号是 p。

p = m × v

动量 = 质量 × 速度

In this equation, p is momentum measured in kilogram metres per second (kg m/s), m is mass in kilograms (kg), and v is velocity in metres per second (m/s).

在这个等式中，p 是动量，单位为千克米每秒 (kg m/s)；m 是质量，单位为千克 (kg)；v 是速度，单位为米每秒 (m/s)。

Momentum is a measure of how much motion an object has. A heavy lorry moving slowly can have the same momentum as a light car moving quickly

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