A database is required instead of a spreadsheet when . professionals need to keep track of things one or more users want to access the same data lists involve data with multiple themes a user requires control over data

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.