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

60 m

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50 m

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30 m

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40 m

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Solution

The correct option is B 50 m
Between time interval 20 s te 40 s, there is non-zero acceleration and retardation. Hence, distance travelled during this interval
$=$ Area between time interval 20 s to 40 s
$= \frac{1}{2} \times 20 \times 3 + 20 \times 1 = 30 + 20 = 50 m$

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

The correct option is B 50 mBetween time interval 20 s te 40 s, there is non-zero acceleration and retardation. Hence, distance travelled during this interval= Area between time interval 20 s to 40 s=12×20×3+20×1=30+20=50m

The correct option is B 50 m
Between time interval 20 s te 40 s, there is non-zero acceleration and retardation. Hence, distance travelled during this interval
$=$ Area between time interval 20 s to 40 s
$= \frac{1}{2} \times 20 \times 3 + 20 \times 1 = 30 + 20 = 50 m$