Question

The data regarding the motion of two different objects P and Q is given in the following table. Examine them carefully and state whether the motion of the objects is uniform or non-uniform.
Time Distance travelled by  object P in metres Distance travelled by  object Q in metres
9:30 am 10 12
9:45 am 20 19
10:00 am 30 23
10:15 am 40 35
10:15 am 50 37
10:45 am 60 41
11:00 am 70 44

  • Motion CBSE Class 9
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Answer

We can see that the object P covers a distance of 10 m in every fifteen minutes. In other words, it covers equal distance in equal interval of time. So, the motion of object P is uniform. On the other hand, the object Q covers 7 m from 9:30 am to 9:45 am, 4m from 9:45 am to 10:00 am, and so on. In other words, it covers unequal distance in equal interval of time. So, the motion of object Q is non-uniform.

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