It is almost possible to have what you need, using the search functionality.

- **Recently Answered Questions**  
  The following query would search for all answers and sort them by the newest answer.  
  http://askubuntu.com/search?tab=newest&q=is%3aanswer

- **Recently Accepted Answers**  
  The next query would search for all answers which are accepted and sort them by the newest answer.  
  http://askubuntu.com/search?tab=newest&q=is%3aanswer%20isaccepted%3ayes

Also following options can help you:
![enter image description here][1]


  [1]: https://i.sstatic.net/4Kjwu.jpg