$\"\"$

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The position function $\"\"$ .

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Where $\"\"$ is the initial velocity of the object $\"\"$ .

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$\"\"$ is the initial position of the object $\"\"$ .

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Position function:

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$\"\"$

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$\"\"$

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The velocity function is defined as rate of change in position function.

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$\"\"$

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Sum and difference rule: $\"\"$ .

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$\"\"$

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Constant multiple rule and the power rule : $\"\"$ .

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$\"\"$

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$\"\"$

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Find the velocity after $\"\"$ .

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Substitute $\"\"$ in velocity function.

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$\"\"$

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The velocity of the ball after $\"\"$ is $\"\"$ .

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$\"\"$

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Find the velocity after $\"\"$ .

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Substitute $\"\"$ in velocity function.

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$\"\"$

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The velocity of the ball after $\"\"$ is $\"\"$ .

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$\"\"$

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The velocity of the ball after $\"\"$ is $\"\"$ .

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The velocity of the ball after $\"\"$ is $\"\"$ .