It's awesome to hear that you enjoy using the physics content! I'm not aware of future plans for physics course updates, but your post has brought the matter to my attention, and I will personally study the content and see what can be done to improve it. If you have any particular suggestions or ideas for additional quizzes and Unit Tests, feel free to add to your post or make a comment include them! I'd be happy to escalate anything else and hear how you would like the course improved in the future.

Thank you for posting -- we love hearing feedback from our passionate community!

Some topics have no practice or quizzes or unity tests at all! The only "complete" Physics course is AP Physics 1.

Yes I am curious about this as well.

I would love to complete Physics AP but I do believe I need foundational knowledge from Physics to do this.

What would you recommend to further Physics education?

I would also love to see more physics problems. I'm recommending Khan Academy as a powerful learning resource to my IB Physics DP students, and more practice questions would be really helpful. The Academy is particularly motivating for some of the otherwise less-engaged kids, but they need more questions to get the most out of it. Something like the Academy's Math courses would be amazing. 

Yes, I would like to see practice exercises and unit tests added to AP Physics 2. I got the attention of the person who is in charge of Science here on Khan Academy and asked him if this would be done in the next 6 months to a year. Unfortunately, this is not going to happen in this time frame. I am almost finished with AP Physics 1 as an adult learner and will be going on to AP Physics 2 once I'm done, even though there aren't any practice exercises or unit tests there yet.

The "plain old" Physics course has a handful of practice exercises and even unit tests in its first three units that are not all duplicates of AP Physics 1 practice exercises and unit tests, but again, they are topics covered in AP Physics 1, not 2.

Look for the topic here about new AP Biology Content to see where I asked my question.

Here's the topic where I asked my question and got it answered:

https://khanacademy.zendesk.com/hc/en-us/community/posts/360042776991-Update-New-and-Improved-AP-Biology-