Understanding Velocity-Time Graphs for Uniform Velocity
Uniform velocity means that an object's speed and direction remain constant. The velocity does not change over time.
Interpreting the Velocity-Time Graph
In a velocity-time graph:
- The vertical axis (Y-axis) represents velocity.
- The horizontal axis (X-axis) represents time.
For an object moving with uniform velocity, its velocity value stays the same at all points in time. On the graph, this is shown as a constant value on the vertical axis. A constant value over time is represented by a horizontal line.
Therefore, a straight line parallel to the time axis indicates that the velocity is constant, which is the definition of uniform velocity.
Matching Graph to Options
- A curved line or a sloping line indicates a changing velocity (acceleration or deceleration).
- A straight line parallel to the time axis indicates a constant velocity (uniform velocity).
This corresponds to Option 3.
Important Questions from Motion
An object is covering distance in direct proportion to the square of time elapsed. What conclusion can be drawn about the motion of the object?
If the distance time graph of the motion of an object is a straight line but not parallel to the time axis, then it may be concluded that the object is moving with a:
Which of the following changes when a body performs uniform circular motion?
Vehicles have treaded tires so that it_______.
The _______ speed of a car at any instant can be determined by its speedometer.
