$\"\"$

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The velocity function is $\"\"$ , $\"\"$ is measured in feets per second.

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Find acceleration of the object.

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The acceleration of the object is $\"\"$ .

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$\"\"$ .

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Apply derivative on each side with respect to $\"\"$ .

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$\"\"$

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Quotient rule of derivatives : $\"\"$ .

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$\"\"$

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The acceleration function is $\"\"$ .

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$\"\"$

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(a)

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Find acceleration at $\"\"$ seconds.

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The acceleration function is $\"\"$ .

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Substitute $\"\"$ in the acceleration function.

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$\"\"$

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$\"\"$ ft/sec².

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$\"\"$

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(b)

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Find acceleration at $\"\"$ seconds.

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The acceleration function is $\"\"$ .

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Substitute $\"\"$ in the acceleration function.

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$\"\"$

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$\"\"$ ft/sec².

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$\"\"$

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(c)

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Find acceleration at $\"\"$ seconds.

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The acceleration function is $\"\"$ .

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Substitute $\"\"$ in the acceleration function.

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$\"\"$

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$\"\"$ ft/sec².

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$\"\"$

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The acceleration function is $\"\"$ .

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(a) Acceleration at $\"\"$ seconds is $\"\"$ ft/sec².

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(b) Acceleration at $\"\"$ seconds is $\"\"$ ft/sec².

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(c) Acceleration at $\"\"$ seconds is $\"\"$ ft/sec².