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Q. Figure shows the graph of $x$-coordinate of a particle moving along $x$-axis as a function of time. Average velocity during $t=0$ to $6\, s$ and instantaneous velocity at $t=3\, s$ respectively, will bePhysics Question Image

Motion in a Straight Line

Solution:

From 0 to $6\, s \rightarrow$ Displacement $=0$
so, average velocity $=0$
at $t=3\, s$, the displacement $=0$, so $v=0$