What is the characteristics of distance time graph for a uniform motion?

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Distance-Time Graph for Uniform Motion
Distance-Time Graph for Non-uniform Motion
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The correct answer is Straight line.

Key Points

The distance-time graph of an object moving with a uniform speed (or constant speed) is a straight line.

Important Points

A body has a uniform motion if it travels equal distances in equal intervals of time, no matter how small these time intervals may be.
For Example when a car running at a constant speed of 10 metres per second, will cover equal distances of 10 meters, every second, so its motion will be uniform.
The distance-time graph for uniform motion in a straight line.

Additional Information

A body has a non-uniform motion if it travels unequal distances in equal intervals of time.
The distance-time graph for a body having non-uniform motion is a curved line.
In a distance-time graph, if the line is parallel to the x-axis means, the body is at rest.

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CBSE Class 9 CBSE Class 9 Science

What are the characteristics of distance-time graph for an object moving with a non-uniform speed?

Answer:
The characteristics of distance-time graph for a non-uniform speed are:

It is always a curve (parabola).
The speed of the moving object at any point is given by the slope of the tangent to the curve at that point.

Answer: (2)

Distance-Time Graph for Uniform Motion

A body is said to be in uniform motion when the body covers the equal distance in equal time intervals. Let’s consider a time interval of 1 second, If a body covers 10 meters in the first 1-second then it should cover 10 meters in every second from there on, this will indicate that the body is in uniform motion. Let’s draw a graph for uniform motion.

As in uniform motion, the distance time graph would be a straight line, because the equal distance is covered in equal units of time.

Distance-Time Graph for Non-uniform Motion

Non-uniform motion is defined as the motion of an object in which the object travels with varied speed and it does not cover the same distance in equal time intervals, irrespective of the time interval duration.

The distance-time graph for non-uniform motion is not a straight line since speed is variable, it can be a curve or a zigzag line.

Watch the video for understanding motion graph