The diagram shows part of a rollercoaster ride with the car at different positions. The car runs freely down from position X to position Y and up the hill on the other side.
What happens to the kinetic energy and to the gravitational potential energy of the car as it moves from position X to position Y?
1 )
kinetic energy:decreases / gravitational potential energy:decreases
2 )
kinetic energy:decreases / gravitational potential energy:increases
kinetic energy:increases / gravitational potential energy:decreases
4 )
kinetic energy:increases / gravitational potential energy:increases
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