A roller coaster starts from rest at point A and continues to point B on a frictionless track.What best describes the changes in kinetic and potential energy as the car travels from point A to point B?
Answer
A
Kinetic and potential energy both increase.
B
Kinetic energy increases, and potential energy decreases.
C
Kinetic energy decreases, and potential energy remains the same.
D
Kinetic energy remains the same, and potential energy decreases.