Bhuv Gupta
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What is the nature of the distance-time graphs for uniform and non-uniform motion of an object?

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NCERT Solutions for Class 9 Science Chapter 8
Motion
NCERT Books for Session 2022-2023
CBSE Board and UP Board
Intext Questions
Page No-107
Questions No-1

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2 Answers

  1. • The slope of the distance-time graph for an object in uniform motion is straight line.
    • The slope of the distance-time graph for an object in non-uniform motion is not a straight line.

    For more answers visit to website:
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  2. Distance-Time Graphs for Uniform and Non-Uniform Motion:

    Uniform Motion:
    – Graph Shape: A distance-time graph for uniform motion appears as a straight line with a constant slope.
    – Characteristics:
    – Represents motion at a constant velocity.
    – Equal distances are covered in equal intervals of time.
    – Linear and uniform graph indicating consistent speed.
    – Key Point: In uniform motion, the slope of the graph signifies the constant speed of the object.

    Non-Uniform Motion:
    – Graph Shape: A distance-time graph for non-uniform motion is non-linear, lacking a constant slope.
    – Characteristics:
    – Exhibits varied shapes, curves, or changing slopes.
    – Unequal distances covered in equal intervals of time.
    – Reflects changing speeds or directions of motion.
    – Key Point: Different sections of the graph represent varying speeds or changes in the direction of motion.

    Summary:
    – Uniform Motion:
    – Graph: Straight line with a constant slope.
    – Indicates constant speed, equal distances in equal time intervals.
    – Non-Uniform Motion:
    – Graph: Non-linear, with changing slopes or curves.
    – Reflects varying speeds or changes in motion direction, unequal distances in equal time intervals.

    Understanding distance-time graphs is crucial for interpreting an object’s motion characteristics. Uniform motion is visually depicted by a straight line with a constant slope, while non-uniform motion is represented by a non-linear graph showcasing changing slopes or curves, indicating variations in speed or direction over time.

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