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Figure. gives the x-t plot of a particle...

Figure. gives the x-t plot of a particle in one-dimensional motion. Three different equal intervals of time are shown. In which interval is the average speed greatest, and in which is it the least ? Give the sign of average velocity for each interval.

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Greatest in 3, least in 2, `upsilon gt 0` in 1 and 2, `upsilon lt 0` in 3.
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NCERT BANGLISH-MOTION IN A STRAIGHT LINE-EXERCISES
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