A car starts at the top of a hill with 200 J of energy, and rolls down a frictionless surface. The isolated system consists of the car, hill, and earth. What happens to the energy of the system as the car moves down the hill?
Responses
The total energy decreases and is converted from being stored as gravitational potential energy into kinetic energy as it moves.
The total energy decreases and is converted from being stored as gravitational potential energy into kinetic energy as it moves.
The total energy stays the same but is converted from being stored as gravitational potential energy into kinetic energy of the car as it moves.
The total energy stays the same but is converted from being stored as gravitational potential energy into kinetic energy of the car as it moves.
The total energy decreases and is converted from being stored as elastic potential energy into kinetic energy as it moves.
The total energy decreases and is converted from being stored as elastic potential energy into kinetic energy as it moves.
The total energy stays the same but is converted from being stored as kinetic energy into elastic potential energy as it moves.
3 answers
The total energy stays the same but is converted from being stored as gravitational potential energy into kinetic energy of the car as it moves. This is due to the conservation of energy principle, which states that energy cannot be created or destroyed, only transferred from one form to another. As the car moves down the hill, its gravitational potential energy decreases while its kinetic energy increases, but the total energy in the system (car, hill, and earth) remains the same.
1 answer