"The mass of this car is two thousand kilograms."

Translation: Masa tego samochodu to dwa tysiące kilogramów.

[br0d4]

2015/12/12 "Masa tego samochodu wynosi dwa tysiące kilogramów." not accepted, reported.

[Kasia288873]

This is probably the fourth example in this test (that I am taking for fun only, because I was born and lived in Poland for 30 years) that uses "masa" and "the mass". Who talks like that? It sounds ridiculous both in English and in Polish.

[alik1989]

That could be an exercise from a physics textbook.

[Kasia288873]

Yes, it could be, however this is rather a basic placement test, so let's just assume it isn't. There are other discussions about the use of masa/the mass (in regards to other questions in this test using the words) with several people expressing similar opinions to mine - maybe Duolingo should have a look at that?
Also, as a sidenote, I am glad I took the test because it made me realise that probably not all courses on this website are great - Polish doesn't seem great (based on the test) unless you find it essential to be able to express how much something weighs - sorry, got it all wrong - to express the mass of an object...

[alik1989]

I'm not entirely sure how the algorithm picks sentences for the placement test, but I strongly suspect that it's done pretty much at random. Having taken the test you just got a tiny glimpse of how the course is like, so I wouldn't be so quick to judge if I were you.