2. A professor does a demonstration where he gives a block a quick shove along a track. After it leaves his hand the block slows down and comes to a stop after moving for about one meter. Students in the class are asked to explain in terms of energy why the block slowed down, and to include all the relevant interactions in their explanation. Here is an explanation from one student.

(1) After the block leaves the professor's hand, there is a [friction-type] contact push/pull interaction between the block and the track.

(2) Energy is transferred from the block to the track, causing the block to slow down and just the track to warm up. (3) Because the track warms up there are heat interactions between the track and the surroundings, transferring energy to the surroundings, causing the surroundings to warm up somewhat.

Evaluate this explanation for accuracy. Consider each of the three sentences.

It is not accurate because just sentence #2 is incorrect.

A. It is not accurate because more than one sentence is incorrect.

B. It is accurate as it is.

C. It is not accurate because just sentence #3 is incorrect.

D. It is not accurate because just sentence #1 is incorrect.