sorry Idk the answer ..???
Is this practically possible? How can a 100kg man fly? Hahaha
It is 6 g/cm3 because density cannot be negative, and it is not speed in which the unit would be m/s.
Answer:

Explanation:
Electric field strength= Force/unit charge
E= (kQq/r²)/q ₓ r
where r is the unit vector in the direction of unit charge
E= 
Objects can have the same mass (but different <span>compositions). Only mass or volume cannot tell you if the object is solid or vo</span>lumes) or same volume (but different masses)