Give reason....
Velocity can be positive, negative or zero.

Dear Student,

Velocity can be all three- positive, negative and zero.
• An object with zero velocity is an object at rest.
• An object with positive velocity is an object moving forward.
• An object with negative velocity is an object moving backwards.
Depending on what you are defining "forward" and "backwards" as. 

For example: 
Driving a car forward would be positive velocity. Driving in reverse would be negative velocity.

Regards

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