$\"\"$

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The position function $\"\"$ .

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The velocity at time $\"\"$ seconds is $\"\"$ .

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$\"\"$

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The velocity at $\"\"$ is $\"\"$ m/sec.

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The velocity at $\"\"$ sec is $\"\"$ .

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$\"\"$ m/sec.

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$\"\"$

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The velocity at $\"\"$ seconds is $\"\"$ m/sec.