Given data
*The given mass of the rocket is m = 3 kg
*The given momentum is p = 90 kg.m/s
The formula for the velocity of the rocket is given by the momentum formula as
[tex]\begin{gathered} p=mv \\ v=\frac{p}{m} \end{gathered}[/tex]
Substitute the known values in the above expression as
[tex]\begin{gathered} v=\frac{90}{3} \\ =30\text{ m/s} \end{gathered}[/tex]
Hence, the velocity of the rocket is v = 30 m/s
