Regents Recap — January 2015: Gravity on the Moon
Here is another installment in my series reviewing the NY State Regents exams in mathematics.
There is something of a history with Regents exams and the force of gravity.
An infamous problem years ago modeled a falling object with the quadratic function
This would imply that the acceleration due to gravity, or g, would be equal to 4 f/s², not the -32 f/s² we are accustomed to. This amusing error inspired my talk “g = 4, and Other Lies the Test Told Me“.
I was pleasantly surprised to see the proper coefficient!
And then I noticed a second appearance of gravity. This is from the Common Core Algebra exam.
Of course, I had to check. Kudos to the exam writers for looking up the actual force of gravity on the moon. If we’re going to go to the trouble of trying to establish “real world” contexts for these problems, we should make sure physical forces are accurately represented.