Alright, so for this problem...
We first need to identify what a unit rate is. The unit rate describes the relationship between an amount and what unit it can be associated with. For example, 2 feet per second, where the amount is two and the unit is seconds. In the sense of this problem, we can make up something, such as 14 feet for every 8 seconds.
If I understand your question correctly, you need to find how many feet you'll gain in 1 second. This is accomplished by solving for the ratio of feet to second:
![14/8=1.75](https://tex.z-dn.net/?f=14%2F8%3D1.75)
This means that there's a 1:1.75 ratio of seconds to feet. You can check this by multiplying the number of seconds by 1.75 to get the number of feet:
![8*1.75=14](https://tex.z-dn.net/?f=8%2A1.75%3D14)
Now all that's left is to plug our value of 1 second where we placed 8 seconds, and we will have our answer.
![1*1.75=1.75](https://tex.z-dn.net/?f=1%2A1.75%3D1.75)
For every one second, 1.75 feet is travelled.
You could also accomplish this/check your work further by graphing this problem. I've attached a graph for you to reference.
Hope this helped you out! Feel free to ask me any additional questions if you have any. :-)