Photosynthesis is an endothermic chemical reaction that forms sugars from carbon dioxide, water, and the sun's energy. which of the following must be true of photosynthesis?

Which of the following situations is impossible? a) an object has velocity directed east and acceleration directed east. b) an object has zero velocity but non-zero acceleration. c) an object has constant non-zero velocity and changing acceleration. d) an object has velocity directed east and acceleration directed west. e) an object has constant non-zero acceleration and changing velocity.