Answer:
The one with highest velocity
Explanation:
The momentum of an object is given by
[tex]p=mv[/tex]
where
m is the mass of the car
v is the velocity of the car
In this problem, we have two identical cars: identical means they have same mass, so
[tex]m_1 = m_2 = m[/tex]
The momentum of car 1 is
[tex]p_1 = mv_1[/tex]
while the momentum of car 2 is
[tex]p_2 = mv_2[/tex]
By comparing the two expressions, we see that the car with greatest momentum is the one with highest velocity, since the mass is the same.
