Which sentence has a misplaced adjective clause?
a. the water slide that greets you at the park's entrance is huge!
b. we placed our chairs by the pool's edge, which were bulky and difficult to carry.
c. the lifeguard, who is a college student, paid close attention to the storm clouds.
d. the children especially enjoyed the water slide, which deposited them into the deep end of the pool.

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.