If the speed of an object moving along a straight line keeps changing, its motion is called ____. An object moving along a straight line with a constant speed is said to be in[[2]].

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Detailed Solution

Concept- If an item moves through space at a consistent speed and covers the same distance in the same amount of time, regardless of how short these intervals may be, it is said to be in uniform motion. The precise opposite is non-uniform motion. To distinguish between uniform and non-uniform motion, use this idea.
A body is said to be moving uniformly if it travels the same distance in the same amount of time.
For instance:
(1) An automobile moves at 20 metres per second. It indicates that the car moves 20 metres in one second, indicating a steady pace during the entire second.
(2) The rotation of a ceiling fan's blades.
A body is considered to be in non-uniform motion if it travels different distances in the same amount of time.
For instance:
(1) A car's motion is not uniform if it travels 10 metres in the first second and 15 metres in the next.
(2) A train's movement (as the train always covers unequal distances in every interval of time).
Hence, the answer is non – uniform,uniform motion.

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