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.
The total energy decreases and is converted from being stored as gravitational potential energy into kinetic energy as it moves.
wrong
I apologize for the mistake in my previous response. The correct answer is:
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.
The total energy decreases and is converted from being stored as gravitational potential energy into kinetic energy as it moves.
The correct response is:
The total energy decreases and is converted from being stored as gravitational potential energy into kinetic energy as it moves.
Explanation: As the car moves down the hill, the gravitational potential energy of the system decreases because the car is losing height. This energy is then converted into kinetic energy as the car gains speed. In a frictionless system, there are no other energy conversions occurring.