Simon's cat is evil and likes to knock his alarm clock off the night stand every morning. Simon's cat must apply a to the alarm clock in order to push it. What word completes the sentence?

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.