Motion in a Straight Line

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Questions and Answers

What is the term for the distance an object travels from its initial to its final position?

  • Displacement (correct)
  • Velocity
  • Speed
  • Acceleration

What is the rate of change of distance with time?

  • Displacement
  • Acceleration
  • Velocity
  • Speed (correct)

What is the equation of motion that describes the relationship between velocity, initial velocity, acceleration, and time?

  • d = st
  • a = Δv / Δt
  • s = ut + (1/2)at^2
  • v = u + at (correct)

What type of motion is characterized by a constant velocity?

<p>Uniform Motion (D)</p> Signup and view all the answers

What does a curved line on a distance-time graph indicate?

<p>Non-uniform motion (B)</p> Signup and view all the answers

What is the term for the rate of change of displacement with time?

<p>Velocity (B)</p> Signup and view all the answers

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Study Notes

Motion in a Straight Line

Definition

  • Motion in a straight line is also known as rectilinear motion
  • It occurs when an object moves in a single direction along a straight line

Key Concepts

  • Displacement: The distance an object travels from its initial to its final position
  • Distance: The total length of the path traveled by an object
  • Speed: The rate of change of distance with time
  • Velocity: The rate of change of displacement with time

Kinematic Equations

  • v = u + at: The equation of motion, where:
    • v = final velocity
    • u = initial velocity
    • a = acceleration
    • t = time
  • s = ut + (1/2)at^2: The equation of motion, where:
    • s = displacement
    • u = initial velocity
    • a = acceleration
    • t = time

Graphical Analysis

  • Distance-Time Graphs:
    • A straight line indicates uniform motion
    • A curved line indicates non-uniform motion
  • Velocity-Time Graphs:
    • A straight line indicates uniform acceleration
    • A curved line indicates non-uniform acceleration

Types of Motion

  • Uniform Motion: An object moves with a constant velocity
  • Non-Uniform Motion: An object moves with a changing velocity
  • Accelerated Motion: An object moves with a changing velocity, resulting in acceleration

Motion in a Straight Line

Definition and Types of Motion

  • Motion in a straight line, also known as rectilinear motion, occurs when an object moves in a single direction along a straight line
  • Types of motion include Uniform Motion, Non-Uniform Motion, and Accelerated Motion

Key Concepts

  • Displacement: the distance an object travels from its initial to its final position
  • Distance: the total length of the path traveled by an object
  • Speed: the rate of change of distance with time
  • Velocity: the rate of change of displacement with time

Kinematic Equations

  • v = u + at: the equation of motion, relating final velocity, initial velocity, acceleration, and time
  • s = ut + (1/2)at^2: the equation of motion, relating displacement, initial velocity, acceleration, and time

Graphical Analysis

  • Distance-Time Graphs: • A straight line indicates uniform motion • A curved line indicates non-uniform motion
  • Velocity-Time Graphs: • A straight line indicates uniform acceleration • A curved line indicates non-uniform acceleration

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