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  4. Velocity time (v - t) graph r 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 -

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Q. Velocity time $(v - t)$ graph $r$ 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 -Physics Question Image

BITSATBITSAT 2007

Solution:

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 $40\, s$
$=\frac{1}{2} \times 20 \times 3+20 \times 1=30+20=50\, m$