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# Approximately what is the total stopping distance, in feet,

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Approximately what is the total stopping distance, in feet, [#permalink]  19 Jan 2016, 08:37
Expert's post
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Question Stats:

90% (00:48) correct 10% (04:16) wrong based on 60 sessions
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Note: Total stopping distance is the sum of the distance traveled during reaction time and the distance traveled after brakes have been applied.

Approximately what is the total stopping distance, in feet, if the car is traveling at a speed of 40 miles per hour when the driver is signaled to stop?

A. 130

B. 110

C. 90

D. 70

E. 40

Practice Questions
Question: 18
Page: 343
Difficulty: medium
[Reveal] Spoiler: OA

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Founder
Joined: 18 Apr 2015
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Kudos [?]: 3182 [0], given: 11688

Re: Approximately what is the total stopping distance, in feet, [#permalink]  19 Jan 2016, 08:44
Expert's post
Solution

The total stopping distance is equal to the sum of the distance traveled during reaction time and the distance traveled after the brakes have been applied

ON the left side graph, we do have, accordingly with the instructions provided: 45

ON the right side graph, we do have a rough value of $$75 < X < 90$$

$$X= 80/85$$

$$45 + 80/85 = 125/130$$

The correct answer is $$A$$
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Intern
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Re: Approximately what is the total stopping distance, in feet, [#permalink]  23 Dec 2019, 07:08
Carcass wrote:
Solution

The total stopping distance is equal to the sum of the distance traveled during reaction time and the distance traveled after the brakes have been applied

ON the left side graph, we do have, accordingly with the instructions provided: 45

ON the right side graph, we do have a rough value of $$75 < X < 90$$

$$X= 80/85$$

$$45 + 80/85 = 125/130$$

The correct answer is $$A$$

We have a spot in the right graph which says that distance is 88. Is it right?
Founder
Joined: 18 Apr 2015
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Kudos [?]: 3182 [0], given: 11688

Re: Approximately what is the total stopping distance, in feet, [#permalink]  23 Dec 2019, 08:15
Expert's post
You have to use both.

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Re: Approximately what is the total stopping distance, in feet, [#permalink]  06 May 2020, 09:08
on left side graph it is clearly 45 and on right side graph, the value is 88
88+45 = 133 approximately so answer is A
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Re: Approximately what is the total stopping distance, in feet,   [#permalink] 06 May 2020, 09:08
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