How do you label distance, speed, acceleration, momentum, and mass?

Which would not reduce the amount of green house gasses in the air

In all trials, the magnitude of the final velocity for g1 + g2 was less than the magnitude of any initial velocity. as mass increased, what happened to the velocity? the velocity decreased. the velocity increased. the velocity of g1 + g2 could not be measured. the velocity was not affected by the mass increase.

The law of the conservation of momentum says that the total momentum of any closed and isolated system cannot