A paper that we've been working on for quite a while just got published! Check it out our if you're into #physicsed and #measurement #psychometrics

@academicchatter

"Is the Force Concept Inventory biased across the intersections of gender and race?"
https://www.researchgate.net/publication/390567150_Is_the_Force_Concept_Inventory_biased_across_the_intersections_of_gender_and_race

Let me try a little physics riddle here on Mastodon. This riddle is really meant as a moment of self-reflection for physics teachers (in particular I invite you to compare what answers you'd give within Relativity Theory)

We're in the context of Newtonian mechanics.

There are three small bodies. In the inertial coordinate system (t, x, y, z), we know the following about the three bodies (at a given instant of time):

- The first has mass 3 kg
- The second has velocity (1, 0, 0) m/s
- The third has momentum (2, 0, 0) kg⋅m/s

Now consider a new coordinate system (t', x', y', z') related to the first by a Galileian boost:

t' = t, x' = x – u⋅t, y' = y, z' = z
with u = 1 m/s

Questions:

- What is the mass of the first body in the new coordinate system?
- What is the velocity of the second body in the new coordinate system?
- What is the momentum of the third body in the new coordinate system?

Can you give definite answers to these three questions, and *motivate your answers with simple physical principles*? Note that by "definite answer" I don't necessarily mean an answer with a definite numerical value.

#physics #physicseducation #physicsed #science #scienceeducation #mechanics

Why was I never taught this? It makes beginning physics make so much sense and makes geometeric interpertations for what our math is doing so much easier. My third eye has been opened. https://mattferraro.dev/posts/geometric-algebra

#physics #physicsed #physics101 #holyshit #math #mathematics #geometrics

Just discovered that Wolfram Alpha does stars.

https://www.wolframalpha.com/input?i=Sirius

#ITeachPhysics #STEMeducation #PhysicsEd #AstroPhysics #Astronomy #AstroEdu #WolframAlpha
#AstronomyTools #TeachAstronomy #AstroEducators #HighSchoolAstronomy #UniversityAstronomy #AstronomyResources #AstronomySoftware #PhysicsTeachers