Some students conduct an experiment to prove conservation of momentum. They use two objects that collide. Measurements are taken before and after the collision. Which two quantities will the students multiply together before and after the collision

Answer 1

Before the collision, the students will multiply the mass of the first object with its initial velocity, followed by multiplying the mass of the second object with its initial velocity.

After the collision, the students will do the same, multiplying the mass of the first object with its final velocity, and then multiplying the mass of the second object with its final velocity.