The difference between them is that
velocity is the speed with a direction, whereas speed does not have a direction.
To answer this question, it helps enormously if you know
the formula for momentum:
Momentum = (mass) x (speed) .
Looking at the formula, you can see that momentum is directly
proportional to speed. So if speed doubles, so does momentum.
If the car's momentum is 20,000 kg-m/s now, then after its speed
doubles, its momentum has also doubled, to 40,000 kg-m/s.
The answer is believed to be C because the evidence is from fossils and glaciers.
True I believe..................
