Which is represented by the arrow labeled 4 in the diagram?
a. water is realizing heat energy and changing from a gas to liquid
b. water is absorbing heat and energy and changing from a liquid to a gas
c. water is being absorbed into the ground
d. water is running and collecting along the surface

Your answer would be D. I'm pretty sure. Looks like the water is going downhill which is known as runoff I think. ☺♥

It depends on the surface of the levels. the rougher the surface, the greater is the frictional force. for rougher surfaces, you would need to exert greater force to move the object. the concept is that, you must overcome the frictional force in order to bring the object into motion. this is the reason why we add lubricants to the joints so they could easily move. this answer was on