FCI question 27 was transformed by changing a concrete physical system, woman an
ID: 2194824 • Letter: F
Question
FCI question 27 was transformed by changing a concrete physical system, woman and box, to an abstract system, blocks. Because the system was abstract the students were told to assume friction and gravity. Problem 27 was a port of a three-question group on the FCI, question 26 was removed from this group on the FCIT. Since a figure was added to the question group, the addition of figure transformation is credited to this question as well as question 25. If the woman in question 23 suddenly stops applying a horizontal force to the block, then the block immediately comes to a stop. continues moving at a constant speed for a while and then slows to a stop. immediately starts slowing to a stop. continues at a constant speed. increases its speed for a while and then starts slowing to a stop. If block 1 in question 25 suddenly disappears along with its force, then block 2 immediately comes to a stop. continues moving at a constant speed for a while and then slows to a stop. immediately starts slowing to a stop. continues at a constant speed. increases its speed for a while and then starts slowing to a stop. FCI question 28 was transformed by changing a concrete physical system, two students on rolling chains, to another concrete system, two people on ice. FCI question 28 contained a figure, but no figure was provided for FCIT question 28. Distractors were re-ordered. In the following figure, student A has mass 75 kg awl student li has a mass of 57 kg. They sit in identical office chairs facing each other. Student A places his bare feet on the knees of student D, as shown. Student A then suddenly pushes outward with his feet, causing both chairs to move. During the push while the students are still touching one another. neither student exerts a force on the other. student A exerts a force on student 13, but li does not exert any force on A. each student exerts a force on the other, but H exerts the larger force. each student exerts a force on the other, but A exens the larger force. each student exerts the same amount of force on the other.Explanation / Answer
FCI[28] Each student exerts the same amount of force on the other - Newton's Laws - equal and opposite forces FCI[27] If there is friction, then that means once the woman stops applying a force, the block will immediately start slowing to a stop. If there is no friction, then it will continue in the same direction at a constant speed. This is the case for both questions in FCI[27] same principle.
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.