BESARAN DAN SATUAN - MATERI FISIKA KELAS 10 | Edcent.id

Introduction

This tutorial provides a comprehensive overview of the concepts of quantities and units in physics, specifically tailored for 10th-grade students. Understanding these concepts is essential for grasping more complex physics topics. We will explore fundamental quantities, derived quantities, and their respective units according to the International System of Units (SI).

Step 1: Understand the Definition of Quantities and Units

• Quantities are measurable attributes that have both a value and a unit.
• Units serve as benchmarks for measuring quantities, allowing for consistent communication of measurements.
• The International System of Units (SI) standardizes these units for global understanding and application.

Step 2: Learn About the Seven Fundamental Quantities

1. Length - The measure of distance. Unit: meter (m).
2. Mass - The measure of matter in an object. Unit: kilogram (kg).
3. Time - The measure of duration. Unit: second (s).
4. Electric Current - The measure of electric charge flow. Unit: ampere (A).
5. Temperature - The measure of thermal energy. Unit: kelvin (K).
6. Amount of Substance - The measure of quantity in chemical terms. Unit: mole (mol).
7. Luminous Intensity - The measure of light emitted. Unit: candela (cd).

Step 3: Explore Additional Fundamental Quantities

• There are also additional dimensionless quantities that do not have specific units but are crucial in various calculations, such as coefficients of friction or efficiency ratios.

Step 4: Examine Derived Quantities

Derived quantities are formed from fundamental quantities. Here are a few key examples:

• Area (L²):

  • Formula: Area = Length × Width
  • Unit: square meter (m²).

• Velocity (L/T):

  • Formula: Velocity = Displacement / Time
  • Unit: meter per second (m/s).

• Density (M/L³):

  • Formula: Density = Mass / Volume
  • Unit: kilogram per cubic meter (kg/m³).

• Acceleration (L/T²):

  • Formula: Acceleration = Change in Velocity / Time
  • Unit: meter per second squared (m/s²).

• Force (M·L/T²):

  • Formula: Force = Mass × Acceleration
  • Unit: newton (N).

Step 5: Familiarize Yourself with Applications

• Understanding these quantities and units is crucial for solving physics problems and conducting experiments.
• Practice converting between different units and solving problems that involve these quantities to build your skills.

Conclusion

This tutorial covered the essential concepts of quantities and units in physics, including fundamental and derived quantities along with their units. Mastering these concepts lays the groundwork for further studies in physics. For further study, consider exploring specific physics problems or laboratory experiments that utilize these principles.