A20 kg mass with an initial velocity of 10 m/s slides to a stop in 2 meters. what is the net work down on the mass? a.) 250 j b.) 500 j c.) 120 j d.) 20 j e.) none of the above

Ithink the answer is a

The answer is water molecules are split.cellular respiration and photosynthesis are complement  reactions to each other. these are reverse reactions. in cellular respiration glucose and oxygen yield water and carbon dioxide. so, when respiration begins,  glucose molecules are split. in the opposite reaction - in photosynthesis, carbon dioxide and water yield glucose and oxygen. thus,  when respiration begins, water molecules are split.