Lesson Notes By Weeks and Term v4 - SHS 1
INTRODUCTION TO PHYSI CS
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INTRODUCTION TO PHYSI CS
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Subject: Physics
Class: SHS 1
Term: 1st Term
Week: 2
Grade code: 1.1.1.LI.2
Strand code: 1
Sub-strand code: 1
Content standard code: 1.1.1.CS.1
Indicator code: 1.1.1.LI.2
Theme: MECHANICS AND MATTER
Subtheme: INTRODUCTION TO PHYSI CS
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Welcome, future scientists and engineers! Physics is the study of how the universe works, from the smallest atoms to the largest galaxies. But to describe the universe accurately, we need a special language: the language of mathematics. Think of a carpenter building a roof in Accra, a surveyor measuring a piece of farmland in the Volta Region, or an engineer designing a bridge over the Pra River. They all use mathematical tools to ensure their work is precise and successful. In this lesson, we will sharpen the essential mathematical tools you already know from maths class and learn how to apply them to solve real-world physics problems.
This section is the core of our lesson. We will review each mathematical tool step-by-step. You will need your scientific calculator. A. Pythagoras's Theorem
What it is: A fundamental rule for any right-angled triangle. It states that the square of the longest side (the hypotenuse) is equal to the sum of the squares of the other two sides (the legs).
Formula: `a² + b² = c²` Where: `c` is the hypotenuse (the side opposite the right angle). `a` and `b` are the other two sides.
When to use it: When you know the lengths of two sides of a right-angled triangle and want to find the length of the third side.