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Hellcat giveaway answer? #2713059
11/05/19 03:49 PM
11/05/19 03:49 PM
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MoparKansas Offline OP
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Anybody else playing this? Who knows the answer - (I'm looking for a smart friend)?

https://www.dodgehorsepowerchallenge.com/

Here is the question:

The fastest time ever run at Pikes Peak is 7:57. That’s way too long. If we removed all the curves, making a straight line from top to bottom, how quickly could a Challenger SRT® Hellcat Redeye reach the top?
ProTips
Slope of 6.4%
Redeye top speed 203 mph
A stock Redeye has a peak acceleration of over 1g. Assume this Redeye will accelerate at an average of .091 g (2.93 ft/s2)
The 12.42 mile long Pike’s Peak course has over 156 turns
What you might need:
A calculator
The internet (unit conversions)
A smart friend
Some kinematic equations:
d=v^2/2a
t=v_f/a
t=d_remaining/v_f


Last edited by MoparKansas; 11/05/19 03:50 PM.
Re: Hellcat giveaway answer? [Re: MoparKansas] #2713098
11/05/19 05:18 PM
11/05/19 05:18 PM
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Irving, TX
feets Offline
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You also need to take into account the decreasing power with altitude.


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Re: Hellcat giveaway answer? [Re: feets] #2713302
11/06/19 10:37 AM
11/06/19 10:37 AM
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theraif Offline
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can the fact that it was a ev be added into ?

Re: Hellcat giveaway answer? [Re: MoparKansas] #2713304
11/06/19 10:40 AM
11/06/19 10:40 AM
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IMGTX Offline
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As I read it they are giving you information you need and do not need.

In the first sentence they are saying "if you remove the curves" and later they state it is "12.42 miles with 156 turns"

I would first figure out what information you need and what you don't.

Re: Hellcat giveaway answer? [Re: feets] #2713305
11/06/19 10:41 AM
11/06/19 10:41 AM
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Calgary, Alberta Canada
a12rag Offline
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Damn . . . not open to Canadians . . . . shocked

Re: Hellcat giveaway answer? [Re: a12rag] #2713330
11/06/19 11:40 AM
11/06/19 11:40 AM
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IMGTX Offline
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Originally Posted by a12rag
Damn . . . not open to Canadians . . . . shocked


Tell us the answer and we will give you a ride if I win it. up

Re: Hellcat giveaway answer? [Re: IMGTX] #2714604
11/10/19 06:03 PM
11/10/19 06:03 PM
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theraif Offline
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no one got the answer yet

Re: Hellcat giveaway answer? [Re: theraif] #2714685
11/10/19 11:20 PM
11/10/19 11:20 PM
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Highland, MI.
Sunroofcuda Offline
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I did this afternoon - with the help of my slide rule.


“Bear in mind that brains and learning, like muscle and physical skill, are articles of commerce. They are bought and sold. You can hire them by the year or by the hour. The only thing in the world not for sale is character.” (Antonin Scalia)
Re: Hellcat giveaway answer? [Re: Sunroofcuda] #2714729
11/11/19 09:19 AM
11/11/19 09:19 AM
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Originally Posted by Sunroofcuda
I did this afternoon - with the help of my slide rule.


and ?
beer

Re: Hellcat giveaway answer? [Re: theraif] #2714734
11/11/19 09:27 AM
11/11/19 09:27 AM
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I calculated it and came up with an answer that doesn't match any of their answer choices exactly. I'll double check it and post it later this after noon.

I converted the MPH to FPS before my calculations but basically:
I calculated the distance to reach 203MPH from 0MPH
I then calculated the time to reach that speed from the acceleration and distance.
That left the time for the rest of the 12.42 Mile distance at 203MPH.

I ignored the slope and number of curves because the curves were irrelevant and their was not enough data to calculate the decreased acceleration based on the slope. I believe they already calculated it when they dropped the acceleration from over 1G to .91G's

If anyone sees a flaw in my logic feel free to point it out.

I'll post what I got later when I get to work.

Re: Hellcat giveaway answer? [Re: IMGTX] #2714786
11/11/19 12:02 PM
11/11/19 12:02 PM
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I entered it, I looked on youtube, they've got some cars running from 0 to top speed and it shows how long it took. I subtract that from the distance remaining and then use that distance at 203MPH. I add the two times together. I chose the answer that was closest to what I calculated. If you entered the hashtags all week long, it narrows the choices down. Some of the answers are ridiculous, so there are only 2 or 3 it can be. Good luck everyone, if I don't win I hope someone from here does.... up

Re: Hellcat giveaway answer? [Re: roadrunninMark] #2714901
11/11/19 05:46 PM
11/11/19 05:46 PM
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I came up with 271 seconds or 4 minutes and 51 seconds.

None of the answers work out to exactly that. there are a couple that are close.

Re: Hellcat giveaway answer? [Re: IMGTX] #2715114
11/12/19 11:54 AM
11/12/19 11:54 AM
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I went with 3 minutes 91 seconds (4 mins 31 sec). I used all the hashtags and the only other answer left I thought it might be was 5 mins 12 seconds. That seems kinda slow.

Re: Hellcat giveaway answer? [Re: roadrunninMark] #2715156
11/12/19 02:05 PM
11/12/19 02:05 PM
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where did you find the hashtags?
I am an instagram/twitter newbie just for this event.

Re: Hellcat giveaway answer? [Re: IMGTX] #2715219
11/12/19 06:50 PM
11/12/19 06:50 PM
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in the pictures from Twitter/ Instagram. Every hashtag you enter reduces the choices for an answer. It went from 60 down to 10 w/ all five hashtags entered. Can only enter 1 per day though.

Re: Hellcat giveaway answer? [Re: roadrunninMark] #2715989
11/15/19 01:52 AM
11/15/19 01:52 AM
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MoparKansas Offline OP
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OK who is working on the week 2 question? I never did put in an answer for last week. I meant to check the post and got busy over the weekend.

Re: Hellcat giveaway answer? [Re: MoparKansas] #2716082
11/15/19 11:13 AM
11/15/19 11:13 AM
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I've got some of the hashtags entered in for this weeks question, down to 35 possible answers. Still some "filler" answers though and I am sure they will be gone when I enter the last two hashtags. The answer is going to be a "whole lotta hp" though!

Re: Hellcat giveaway answer? [Re: roadrunninMark] #2716749
11/17/19 01:47 PM
11/17/19 01:47 PM
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bee1971 Offline
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Well , down to 10 answers

Time to use what little brain I have left on second question


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