Which of the following describes pressure in a fluid ?
a. pressure increases with increasing depth
b. pressure remains unchanged with increasing depth
c. pressure varies randomly throuout a fluid
d. pressure decreases with increasing depth

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.