Which of the following position-energy curves cannot possibly describe the elastic collision of billiard balls, and why?
a. A position-energy curve where the position decreases as the energy increases cannot describe the elastic collision of billiard balls, as this would violate the conservation of energy.
b. A position-energy curve where the energy increases as the position decreases cannot describe the elastic collision of billiard balls, as this would also violate the conservation of energy.
c. A position-energy curve where the position remains constant as the energy increases cannot describe the elastic collision of billiard balls, as this would not accurately represent the changes in kinetic and potential energy during the collision.
d. A position-energy curve where the energy remains constant as the position increases cannot describe the elastic collision of billiard balls, as this would not accurately represent the changes in kinetic and potential energy during the collision.