GERAK LURUS BERATURAN CONTOH SOAL DAN PEMBAHASAN~KELAS XI KURIKULUM MERDEKA

Introduction

This tutorial focuses on the concept of "gerak lurus beraturan" or uniform linear motion, as presented in a video for Class XI under the Merdeka curriculum. It will cover the conditions necessary for this type of motion, relevant formulas, and example problems to reinforce your understanding. This guide is ideal for students looking to grasp the fundamentals of uniform linear motion in physics.

Step 1: Understand the Concept of Uniform Linear Motion

• Definition: Uniform linear motion is when an object moves in a straight line with a constant speed.
• Key Characteristics:
  • The velocity remains constant (both speed and direction).
  • There is no acceleration (change in speed or direction).

Step 2: Identify the Conditions for Uniform Linear Motion

• Sufficient Force: An object must be acted upon by a net force that allows it to maintain constant velocity.
• Frictionless Environment: Ideally, minimal friction or resistance is present to sustain uniform motion.
• Constant External Factors: External conditions like wind or slope should not affect the motion.

Step 3: Learn the Formula for Uniform Linear Motion

• The basic formula used to calculate the distance covered in uniform linear motion is:

  [ s = vt ]

  Where:

  • ( s ) = distance traveled (meters)
  • ( v ) = constant speed (meters per second)
  • ( t ) = time taken (seconds)

Step 4: Solve Example Problems

• Example Problem 1: An object moves at a speed of 10 m/s for 5 seconds. Calculate the distance traveled.

  • Solution:
    • Use the formula: ( s = vt )
    • ( s = 10 \text{ m/s} \times 5 \text{ s} = 50 \text{ m} )

• Example Problem 2: If a car travels 100 meters in 8 seconds, what is its speed?

  • Solution:
    • Rearrange the formula: ( v = \frac{s}{t} )
    • ( v = \frac{100 \text{ m}}{8 \text{ s}} = 12.5 \text{ m/s} )

Step 5: Common Pitfalls to Avoid

• Ignoring Direction: Always consider both speed and direction when discussing motion.
• Confusing Speed with Velocity: Remember that speed is a scalar quantity (magnitude only), while velocity is a vector (magnitude and direction).

Conclusion

Uniform linear motion is a fundamental concept in physics characterized by constant speed in a straight line. By understanding the conditions required for this motion, mastering the formula, and practicing with example problems, you'll be able to apply this knowledge effectively. For further study, consider exploring related topics like acceleration and forces, or try additional practice problems to enhance your comprehension.