A rollercoaster of mass 2000 kg starts at rest at the top of

Last updated: 7/23/2022

A rollercoaster of mass 2000 kg starts at rest at the top of an 80 m high hill and begins his journey. Friction is negligible. a. What is the coaster's potential energy at the top of the 80 m hill? b. What is the coaster's kinetic energy at the top of the 80 m hill? c. What is the coaster's potential energy at the top of a 30 m hill? d. What is the coaster's kinetic energy at the top of a 30 m hill? e. What is the coaster's speed at the top of a 30 m hill?