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The velocity-...

Question

The velocity-time graph of a body is shown. Its acceleration in $m / s^{2}$ is .

A

20

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B

15

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C

10

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Solution

The correct option is B 15
Acceleration (a) = Slope of v-t graph
Slope $= \frac{(80 - 20)}{(4 - 0)} = 15$ $\Rightarrow a = 15 m s^{- 2}$

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