The acceleration - time graph for a particle in rectilinear motion is as shown in the figure. Find the average acceleration in first twenty seconds.

10 m s^{- 2}

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15 m s^{- 2}

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20 m s^{- 2}

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25 m s^{- 2}

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Solution

The correct option is B $15 m s^{- 2}$
$\frac{1}{2} \times 10 \times 20 = 100$
$10 \times 20 = 200$
Net total = 100+200 =300
Av. acceleration = $\frac{300}{20} = 15 m / s^{2}$

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The acceleration - time graph for a particle in rectilinear motion is as shown in the figure. Find the average acceleration in first twenty seconds.

The correct option is B 15ms−212×10×20=10010×20=200Net total = 100+200 =300Av. acceleration = 30020=15m/s2

The correct option is B $15 m s^{- 2}$
$\frac{1}{2} \times 10 \times 20 = 100$
$10 \times 20 = 200$
Net total = 100+200 =300
Av. acceleration = $\frac{300}{20} = 15 m / s^{2}$