Velocity-time graph of a particle moving in a \( \mathrm{P} \) stra...

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Velocity-time graph of a particle moving in a
\( \mathrm{P} \) straight line is shown in figure. In the time interval

W from \( t=0 \) to \( t=14 \mathrm{~s} \), find:
(a) Average velocity and
(1) \( \left(\frac{50}{7}\right) \mathrm{m} / \mathrm{s} \)
(2) \( \left(\frac{25}{7}\right) \mathrm{m} / \mathrm{s} \)
(3) \( \left(\frac{20}{7}\right) \mathrm{m} / \mathrm{s} \)
(4) \( \left(\frac{15}{7}\right) \mathrm{m} / \mathrm{s} \)
(b) Average speed of the particle
(1) \( 20 \mathrm{~m} / \mathrm{s} \)
(2) \( 40 \mathrm{~m} / \mathrm{s} \)
(3) \( 10 \mathrm{~m} / \mathrm{s} \)
(4) \( 30 \mathrm{~m} / \mathrm{s} \)
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