To identify the momentum of Object 1, you must multiply: B. mass and C. velocity.
In Physics, momentum can be defined as a multiplication of the mass of an object and its velocity.
Mathematically, momentum is giving by this formula;
[tex]Momentum = mass \times velocity[/tex]
Substituting the given parameters into the formula, we have;
[tex]Momentum = 2.0 \times 4.0[/tex]
Momentum = 8.0 Kgm/s.
Read more on momentum here: brainly.com/question/15517471