Yes, at first it made me feel upset, but after i thought about it i realized i didn't care about their opinion and i can prove them wrong. <span />
It might be stated that part 4 is included in order to provide a data-support information, that is to say, that this is not just an opinion but there have been researches on the matter, such as census and polls which might add validity to the statements. This is a way of showing that there is enough information to support the topic discussed.
The difference between speed and velocity is that velocity is speed with a direction vector associated with it. It's that direction vector that makes them different. Let's back up a bit and review. Speed is displacement (distance traveled) per unit time. Velocity is displacement (distance traveled) per unit time in a given direction. The "directionallity" associated with velocity makes it a vector quantity, while speed is a scalar quantity.
What is the question your trying to ask
Answer:
Idk I guess someone I can bother