Given data:
The mass of car is m=1500 kg.
The momentum of the car is p=500 kgm/s.
The expression for the momentum is given by,
[tex]p=mv[/tex]Substitute the given values in above equation,
[tex]\begin{gathered} \frac{500kgm}{s}=(1500kg)v \\ v=0.333\text{ m/s} \end{gathered}[/tex]Thus, the velocity of the car is 0.333 m/s.
