Answer:
[tex]2 g/cm^3[/tex], it will sink
Explanation:
The density of an object is given by
[tex]d=\frac{m}{V}[/tex]
where
m is the mass of the object
V is its volume
For the body in the problem, we have
m = 4 kg = 4000 g
[tex]V=2000 cm^3[/tex]
Therefore, its density is
[tex]d=\frac{4000}{2000}=2 g/cm^3[/tex]
And the object will sink in water, because its density is larger than that of water, which is [tex]1 g/cm^3[/tex]. (an object sinks when its density is larger than that of water, otherwise it floats).