Asked by Matthew
i.imgur. com/cqwun. png
i'm kind of stuck.. are the answers 6, -3, -3, and 0?
i'm kind of stuck.. are the answers 6, -3, -3, and 0?
Answers
Answered by
Steve
6 is the correct 1st answer.
looking at the graph,
a(t) = 3 - 3/2 (t-2) for t>=2
so,
v(t) = 6t - 3/4 t^2
v(2) = 6*2 - 3/4 * 4 = 9
v(4) = 6*4 - 3/4 * 16 = 12
so, ∆v = 3
Note that even though a is decreasing, it is still positive, so v will be increasing
v(6) = 6*6 - 3/4 * 36 = 9
so, ∆v = -3
from t=0 to 6, v went +6 +3 -3 = +6
looking at the graph,
a(t) = 3 - 3/2 (t-2) for t>=2
so,
v(t) = 6t - 3/4 t^2
v(2) = 6*2 - 3/4 * 4 = 9
v(4) = 6*4 - 3/4 * 16 = 12
so, ∆v = 3
Note that even though a is decreasing, it is still positive, so v will be increasing
v(6) = 6*6 - 3/4 * 36 = 9
so, ∆v = -3
from t=0 to 6, v went +6 +3 -3 = +6
There are no AI answers yet. The ability to request AI answers is coming soon!
Submit Your Answer
We prioritize human answers over AI answers.
If you are human, and you can answer this question, please submit your answer.