Step 1:

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The velocity function is \"\", \"\".

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(a)

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Find displacement.

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The velocity is defined as change in displacement over a change in time.

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\"\".

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\"\"

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Displacement  of the particle is \"\".

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Step 2:

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(b)

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Find distance.

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To find the total distance, velocity is negative from 0 to \"\" where velocity is positive from \"\" to 3

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The total distance of the particle over the interval \"\".

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The total distance \"\"

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\"\"

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The total distance of the particle is \"\".

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Solution :

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(a) Displacement  of the particle is \"\".

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(b) The total distance of the particle is \"\".