• Converting energy-momentum from one reference frame to another.
• Certain combinations (mass) are invariant.

Estimated Time: 30 minutes, including wrap-up

Students should be asked to complete the table on the Handout.

• basic understanding of relativistic mechanics.

• Small whiteboards with markers
• Handout (HTML version)

• Ask several students to present/defend their responses.
• Demonstrate how the table can be completed using hyperbola triangle trig.