Help asap PLEASE I will give u max everything all that

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.

Where do magnetic lines of force enter earth?

Language is not the only way that humans communicate. describe how we use sound, touch, chemicals, and sight to communicate. need answer asap