$\"\"$

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The acceleration due to gravity is $\"\"$ ft/sec/sec.

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The initial velocity of object is $\"\"$ ft/sec.

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$\"\"$ .

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Acceleration of a object is rate of change in velocity $\"\"$ .

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Velocity is $\"\"$ .

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$\"\"$ .

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Substitute $\"\"$ in $\"\"$ .

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$\"\"$

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$\"\"$ .

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$\"\"$

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The position of a object at time $\"\"$ is $\"\"$ .

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Velocity of a object is rate of change in position $\"\"$ .

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Position at time $\"\"$ is $\"\"$ .

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$\"\"$

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$\"\"$ .

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The initial height of object is $\"\"$ feet.

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$\"\"$ .

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Substitute $\"\"$ in $\"\"$ .

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$\"\"$

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Substitute $\"\"$ .

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$\"\"$ .

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Substitute $\"\"$ in $\"\"$ .

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$\"\"$ . $\"\"$

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$\"\"$ .