Old musket are heavier and their bullets where a bit slower and less powerfull.
It would make the curve go in an upwards manner...
A generally accepted fact does not have to be cited in an academic paper, whereas a paraphrase, another person's opinion, and a diagram have to be cited.
The coach could grade their performance.
Social loafing refers to the fact that a person might not produce much effort when in a group, as opposed when alone. So, these kids know that together they are pretty good, so they don't have to try hard; but when they are alone, they do. In order to prevent this, the coach might want to grade their performance, because then they will try harder.
