The relay stick would have the same velocity relative to Ingrid as the velocity she threw it because she threw it while running 9 km/h and the question asks for how fast it is moving RELATIVE to Ingrid, who also started off moving at 9 km/h.
Sorry if explanation is bad, this one was a bit of head scratcher for me to wrap my head around ig.
A writing principle that suggests that trio of events or characters is more humorous,satisfying,or effective than other numbers......latin phrase "omne trium perfectum"
I would say the answer is definitely B indentifing emerging trends in a particular field that may generate ideas <span>that may generate ideas for a research project of paper</span>
