From the velocity-time plot shown in the given figure,
Question:

From the velocity-time plot shown in the given figure, find the distance travelled by the particle during the first 40seconds. Also find the average velocity during the period.

Solution:

Distance $=$ Area of $v$-t graph

$=\left(\frac{1}{2} \times 20 \times 5\right)+\left(\frac{1}{2} \times 20 \times 5\right)$

$=100 \mathrm{~m}$

Displacement $=\left(\frac{1}{2} \times 20 \times 5\right)+\left(-\frac{1}{2} \times 20 \times 5\right)$

Displacement $=0$

$\overrightarrow{V_{\text {ang }}}=\frac{\text { displacement }}{\text { time }}$

$\vec{V}_{\text {avg }}=0$

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