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-3
What can you say about the motion of an object if its speed time graph is a straight line parallel to the time axis?
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Speed-Time Graph: Straight Line Parallel to Time Axis
Graph Characteristics:
– Shape: The speed-time graph appears as a straight horizontal line parallel to the time axis.
– Representation: This line signifies a specific type of motion or velocity pattern.
Motion Characteristics:
– Constant Speed:
– The straight line on the graph indicates that the object maintains a consistent speed throughout the recorded time interval.
– The object moves at a steady pace without any changes in its velocity.
– Uniform Motion:
– There is no acceleration or deceleration present as the speed remains constant.
– The object experiences uniform motion with a steady and unchanging speed.
Interpretation:
– Consistent Velocity:
– The line’s parallel nature to the time axis implies that the object’s speed remains unchanged over the given time period.
– Absence of Acceleration or Deceleration:
– No change in the rate of speed signifies a lack of acceleration or deceleration during the recorded time.
Conclusion:
– A speed-time graph showing a straight line parallel to the time axis indicates an object moving at a constant speed. This signifies that the object maintains a steady velocity without any acceleration or deceleration throughout the recorded time interval.
When the graph of a speed time graph is a straight line parallel to the time axis, the object is moving with constant speed.
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