In this work, we compare the acquisition of concepts that engineering students of this study have in their physics courses related to Newtonian mechanics, along with their curriculum, considering that the students have more than one course related to this subject. The students of engineering careers of this study have three courses (Physics 1, Physics 2, and Physics 3), positioned in different semesters, related to Newtonian mechanics in which it revised concepts associated with Newton laws. For this purpose, we use the Force Concept Inventory (FCI) test as a pre-instruction test at the beginning of the academic semester. The data reported in this paper were analyzed using the concentration analysis method. The results show that there's no substantial improvement in the overall performance of the students of these three courses. Also, there are questions of the FCI that repeat in the three courses where students present issues with choosing the correct choice.