Given:
The mass of the clay is

The mass of the car is

The initial velocity of the clay is

The initial velocity of the toy car is

Required: velocity after the impact
Step-by-step explanation:
when a clay of mass m collides with a toy car then both of them move with the same velocity.
we will apply the momentum conservation here
that is given by
momentum before the impact= momentum after the impact

Plugging all the values in the above relation, we get

Thus, the final velocity of clay and car is
