$\"\"$

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The quadratic fucntion is $\"\"$ .

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(a).

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Find how many feet will take a car to travelling $\"\"$ to stop on dry.

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Substitute $\"\"$ in the equation $\"\"$ .

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$\"\"$

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$\"\"$

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$\"\"$ .

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The distance $\"\"$ will take a car to travelling $\"\"$ to stop on dry.

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$\"\"$

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(b).

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Find maximum speed when the distance is $\"\"$ .

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Substitute $\"\"$ in the equation $\"\"$ .

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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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$\"\"$ or $\"\"$

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$\"\"$ or $\"\"$

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The velocity of the function is always positive i.e $\"\"$ .

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Therefore,the velocity is $\"\"$ when the stopping distance is $\"\"$ .

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(c).

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In the equation $\"\"$ represents the distance travelled in $\"\"$ hours with velocity $\"\"$ .

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$\"\"$

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(a) The distance $\"\"$ will take a car to travelling $\"\"$ to stop on dry.

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(b) The velocity is $\"\"$ when the maximum distance is $\"\"$ .

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(c) The distance travelled in $\"\"$ hours with velocity $\"\"$ .