Question

A blue lab cart is traveling west on a track
when it collides with and sticks to a red lab
cart traveling east. The magnitude of the
momentum of the blue cart before the collision
is 2.0 kilogram • meters per second, and the
magnitude of the momentum of the red cart before
the collision is 3.0 kilogram • meters per second.
The magnitude of the total momentum of the
two carts after the collision is