$\"\"$

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The total distance of the object $\"\"$ is $\"\"$ .

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Where time $\"\"$ is measured in seconds and initial velocity $\"\"$ is measured in feet per second.

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(a)

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The object is thrown straight down from a height of $\"\"$ .

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The time taken by the object is $\"\"$ .

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Find the initial velocity of the object .

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

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$\"\"$

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$\"\"$

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$\"\"$

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$\"\"$

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$\"\"$

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$\"\"$ .

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Therefore, the object is thrown straight down hence the initial velocity of the object is $\"\"$ .

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$\"\"$

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(b)

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Find the average velocity of the object.

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The average velocity of the object is $\"\"$ .

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$\"\"$ .

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Therefore, the object is thrown straight down hence the average velocity of the object is $\"\"$ .

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$\"\"$

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(c)

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Find the object velocity when it is hit the ground.

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The object velocity is $\"\"$ .

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The function is $\"\"$ .

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$\"\"$

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$\"\"$

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$\"\"$

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$\"\"$

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$\"\"$

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$\"\"$

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Substitute $\"\"$ .

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$\"\"$ .

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Therefore, the velocity of the object when it is hit the ground is $\"\"$ .

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$\"\"$

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(a) The object is thrown straight down hence the initial velocity of the object is $\"\"$ .

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(b) The object is thrown straight down hence the average velocity of the object is $\"\"$ .

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(c) The velocity of the object when it is hit the ground is $\"\"$ .