Velocity - time (v-t) graph for a moving object is shown in the figure. Total displacement (in m) of the object during the time interval when there is non-zero acceleration and retardation is _____

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Velocity - time (v-t) graph for a moving object is shown in the figure. Total displacement (in m) of the object during the time interval when there is non-zero acceleration and retardation is $______$

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answer is 50.

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Detailed Solution

Between time interval of 20s to 40 s, there is non-zero acceleration and retardation.

Hence, the distance traveled during this interval
= Area between time interval 20 s to 40 s
=1/2 × 20 × 3 + 20×1 = 30 + 20 = 50m

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