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Let's say your headed north on US 89, 10 miles north of Flagstaff, where the downgrade...

Let's say your headed north on US 89, 10 miles north of Flagstaff, where the downgrade is 6% for about 4 miles. Find the distance required to stop if your initial speed is 65 mph. Find it both without AND with including a 1.5 second reaction time. [Downgrade is the drop in height ∆y as a percent of the distance traveled ∆x. How can you find an angle from this value? ]

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since the value of retarding acceleration is not given hence assuming the retarding acceleration of car be "x"

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