Two cars collide head on. car a has a mass of 1000 kg car b has a mass of 2000 kg. what is the speed of car b after the collision?

Explanation :

It is given that :

Mass of car A,

Mass of car B,

Let, the speed of car A and B after collision are and respectively and and be their initial velocities.

We know that in head on collision, momentum remains conserved.

so,

so,

so,

Hence, the speed of car B is

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