The kinetic energy = 6 Joules
Explanation:The mass of the object, m = 3 kg
The momentum, ρ = 6 kg m/s
Momentum, ρ = mv
6 = 3v
v = 6/3
v = 2 m/s
The velocity, v = 2 m/s
The kinetic energy is given by the formula below
[tex]KE=\frac{1}{2}mv^2[/tex]Substitute m = 3 kg and v = 2 m/s into the formula above
[tex]\begin{gathered} KE=\frac{1}{2}\times3\times2^2 \\ KE=\frac{1}{2}\times3\times4 \\ KE=3\times2 \\ KE=6J \end{gathered}[/tex]The kinetic energy = 6 Joules