The potential energy U(x) of a particle moving along x-axis is shown in figure. Which one of the following graphs represents the variation of kinetic energy of this particle if its total mechanical energy is E₀?

Question

G1 Physics · Accepted Answer

For fixed total energy E₀, kinetic energy is K(x)=E₀-U(x). Therefore the K-x graph is the vertical complement of the given U-x graph, which is Image 1. Hence A.