A snowboarder slides freely from point A to point E on a snow ramp. Assuming no air resistance or friction in the system, how will the mechanical energy of the snowboarder-Earth system change ?

this allows people to make the best decision or pursue the best option. when alternatives are weighed using their advantages and disadvantages, the option whose disadvantages outweigh the advantages (based on a qualitative or quantitative analysis) are shunned while those whose advantages outweigh their disadvantages are pursued.