# Thanks ELH Challenge #115

Aug 16, 2016

A little while ago there was the ELH #115 Parallax Challenge. I learned a lot from this challenge as i hadn't used sliders before, let alone in a way where multiple sliders interacted with each other.

Well, thanks to that challenge, i did learn. And i was able to apply it to a project im currently working on. The demo below shows how speed effects the stopping distance of a vehicle on multiple road surfaces.

I pulled this from a safe driving module i am building. I wanted to give a shout out to the ELH  Challenge community, i always get excited when i can use some knowledge that i recently gained.

I'll include the .Story if anyone is interested in how I incorporated the math. The sliders move on the formula:

d = (v^2)/(2ug)

where d = distance,

v = velocity,

u = coefficient of friction,

and g = acceleration due to gravity

It still needs to be prettied up a bit, but I'm happy with the function. enjoy.

###### 9 Replies

This is very cool, David! Thanks for sharing your file. I know folks will enjoy digging into this one.

That's so good David, well done! That was a great, and challenging, challenge, we all learned a lot in that one, thanks for sharing.

Love this example of sliders in action, David. I'm with David. Thanks for sharing your file with everyone!

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Hey All,

A very basic question for you... where do I find a link to these challenges, from the beginning? I would love to hone my skills with them!

Got it, Michael. Thank you!

Sent via the Samsung Galaxy Note5, an AT&T 4G LTE smartphone

Just saw this as part of a round up for working with interactive data. Excellent job, especially the multiple sliders all working in concert. Thanks for sharing with us!

This is really cool David!  Thanks for sharing such a practical, real-life example.