Question

motion of an object is Said to be non-uniform when it's velocity​

Answer 1

Answer:

Uniform motion happens when the object is moving with a constant velocity. Non-uniform motion occurs when an object travels different distances in equal time intervals. This happens when the object is speeding up or slowing down, so its velocity is changing

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Explanation:

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Answer 2

Answer:

Imagine that you could take a picture of a car traveling down a straight road every second. It might look something like the diagram that you're seeing on your screen right now.

motion diagram of uniform motion

Did you notice that the car travels the exact same distance every second? That's because this is an example of uniform motion, in which an object travels equal distances in equal time intervals. If any object has uniform motion, then it also has a constant velocity.

One way to represent the motion of an object is to make a position-time graph. If you made a graph of the car's position over the three seconds shown, it would look like the one on your screen right now.

uniform motion position time graph

Looking at this graph, you can tell right away that the motion is uniform, because the graph forms a straight line with a constant slope. The slope of a position-time graph will tell you the velocity of an object, which is 10 m/s for the car shown earlier.