Summary

• Description:

  The PDF document comprises Form 3 Physics notes on the topic of Linear Motion.

  The topics and sub-topics covered in the document include:

  • Introduction to Motion
    • The study of motion is divided into Kinematics and Dynamics.
    • Kinematics disregards the forces causing motion, while dynamics deals with both the motion and the forces causing it.
  • Basic Concepts of Linear Motion
    • Displacement: Defined as the distance moved by a body in a specified direction. It is a vector quantity with the SI unit of metres (m).
    • Speed: Defined as the distance covered per unit time. It is a scalar quantity with SI units of metres per second (m/s).
    • Velocity: Defined as the change of displacement per unit time and is a vector quantity.
    • Acceleration: Defined as the change of velocity per unit time. It is a vector quantity with SI units of m/s². Retardation is also explained as negative acceleration.
  • Motion Graphs
    • Distance-Time Graphs: Illustrates how to represent a stationary body, a body moving with uniform speed, and a body moving with variable speed.
    • Velocity-Time Graphs: Explains that the area under a velocity-time graph gives the distance covered by the body. The gradient of the graph represents acceleration. A detailed example is provided to show how to calculate total distance and acceleration from the graph.
  • Ticker-Timer
    • This device is used to measure speed, velocity, and acceleration.
    • Most timers operate at a frequency of 50 Hz, producing 50 dots per second, which means the time interval (a tick) between consecutive dots is 0.02 seconds.
    • Worked examples show how to calculate velocity and acceleration from the tape.
  • Equations of Linear Motion
    • The three equations for uniformly accelerated motion are provided: v = u + at, s = ut + ½at², and v² = u² + 2as.
    • Worked examples demonstrate the application of these formulas.
  • Motion Under Gravity
    • The equations of linear motion are adapted for objects in free fall and for vertical projection against gravity.
    • Formulas are provided to calculate the time to reach maximum height, total time of flight, and maximum height for a projectile.
    • The concept of horizontal projection is also explained, defining trajectory and range.

  These notes are comprehensive, neat, and printable, making them an excellent resource for students studying linear motion. They are also highly suitable for teachers to use for lesson preparation, providing clear definitions, numerous worked examples, and graphical representations to enhance understanding.

• Category:

  Lesson Notes
• Level:

  Form 3
• Subject:

  PHYSICS

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