Write out the expanded total energy equations for the skater at positions A and C (in terms of K = kinetic energy, U = potential energy, Q = thermal energy). Then, combine your two equations to write one equation that shows the relationship between these forms of energy at two different positions (A and C).
a) Kₐ + Uₐ + Qₐ = Kᵦ + Uᵦ + Qᵦ
b) Kₐ + Uₐ + Qₐ = Kᶜ + Uᶜ + Qᶜ
c) Kₐ + Uₐ + Qₐ = Kᵦ + Uᵦ - Qᵦ
d) Kₐ + Uₐ + Qₐ = Kᶜ + Uᶜ - Qᶜ