Question

4.
What is a distance-time graph? How can we find the speed of an object from its distance-
5. Distinguish between uniform and non-uniform motion. Also, give examples of each.
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Answer 1

Answer:

4.If an object moves along a straight line, the distance travelled can be represented by a distance-time graph. In a distance-time graph, the gradient of the line is equal to the speed of the object. The greater the gradient (and the steeper the line) the faster the object is moving.

5.Rectilinear motion has zero acceleration. Example of uniform motion: A body moving with a constant speed in a straight line has uniform motion. Non-uniform motion: When an object covers an unequal distance in equal interval of time, the motion is called non-uniform motion.

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Answer 2

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4. If an object moves along a straight line, the distance travelled can be represented by a distance-time graph. In a distance-time graph, the gradient of the line is equal to the speed of the object. The greater the gradient (and the steeper the line) the faster the object is moving.

5. Rectilinear motion has zero acceleration. Example of uniform motion: A body moving with a constant speed in a straight line has uniform motion. Non-uniform motion: When an object covers an unequal distance in equal interval of time, the motion is called non-uniform motion.