A straight line with a negative slope on a velocity-time graph indicates which of the following? constant acceleration toward the reference

constant velocity away from the reference

no movement

constant acceleration away from the reference

At what point on the position-time graph shown is the object's instantaneous velocity smallest?

A

D

C

B

Rain is pulled by gravity which is a non contact force

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.