🎯ፊዚክስ ፈተና ላይ ጥሩ ውጤት እየሰራችሁ ካልሆነ ወይም ደካማ ከሆናችሁ እነዚህን 3 ነገሮች ከማወቅ ጀምሩ ። ሌሎቹ ቀስ ብለው ይደርሳሉ ።
I , Measurement and Units:
1. SI Units: Familiarity with the standard international (SI) system of units (meter, kilogram, second, etc.) is essential.
II . Motion and Forces:
1. Kinematics: This involves describing motion without considering the causes. Focus on:
-Distance and Displacement: The difference between scalar and vector quantities.
- Speed and Velocity: Understanding average and instantaneous speed/velocity.
-Acceleration: How changes in velocity are described.
- Graphs of Motion: Interpreting distance-time and velocity-time graphs. Relating slope to speed/acceleration.
2. Dynamics: This examines the causes of motion, focusing on forces.
- Newton's Laws of Motion: Understanding the concepts of inertia, force, and acceleration. Relating force and mass to acceleration.
-Forces: Identifying different types of forces (gravity, friction, normal force, tension). Drawing free-body diagrams.
- Weight and Mass: The difference between these fundamental properties.
III. Energy:
1. Work and Energy:
- Work: Defining work as the product of force and displacement in the direction of the force. Understanding when work is done and when it isn't.
- Kinetic Energy: Energy of motion. The relationship between kinetic energy, mass, and velocity.
- Potential Energy: Stored energy (gravitational potential energy is a good starting point).
- Conservation of Energy: Energy cannot be created or destroyed, only transformed.
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I , Measurement and Units:
1. SI Units: Familiarity with the standard international (SI) system of units (meter, kilogram, second, etc.) is essential.
II . Motion and Forces:
1. Kinematics: This involves describing motion without considering the causes. Focus on:
-Distance and Displacement: The difference between scalar and vector quantities.
- Speed and Velocity: Understanding average and instantaneous speed/velocity.
-Acceleration: How changes in velocity are described.
- Graphs of Motion: Interpreting distance-time and velocity-time graphs. Relating slope to speed/acceleration.
2. Dynamics: This examines the causes of motion, focusing on forces.
- Newton's Laws of Motion: Understanding the concepts of inertia, force, and acceleration. Relating force and mass to acceleration.
-Forces: Identifying different types of forces (gravity, friction, normal force, tension). Drawing free-body diagrams.
- Weight and Mass: The difference between these fundamental properties.
III. Energy:
1. Work and Energy:
- Work: Defining work as the product of force and displacement in the direction of the force. Understanding when work is done and when it isn't.
- Kinetic Energy: Energy of motion. The relationship between kinetic energy, mass, and velocity.
- Potential Energy: Stored energy (gravitational potential energy is a good starting point).
- Conservation of Energy: Energy cannot be created or destroyed, only transformed.
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