Physics

To solve this, we can use the principle of conservation of momentum. Since the two cars stick together after the collision, this is a perfectly inelastic collision.

 

The formula for momentum conservation is:

 

Where:

(mass of the first car)

(velocity of the first car)

(mass of the second car)

(velocity of the second car, since it is at rest)

is the final velocity of both cars after the collision.

 

Now, substitute the known values into the equation:

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