Open new tab with default search engine

Is it possible to open new tab and start search using default search engine?

For example - open new tab and search “firefox release notes”.

I’ve tried to use tabs.create and set search term as url but it didn’t work out.

So - is it possible to open new tab and start search or I will need to get default search engine and prepare full url for tabs.create? And if the second option is the right way - how can I get users default search engine?

Thanks in advance!