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Leya [2.2K]
4 years ago
11

Need help ASAP! Please

Mathematics
1 answer:
Flura [38]4 years ago
6 0

Answer:

118.5 m

Step-by-step explanation:

I'm not sure what you mean by distance, displacement distance or total distance, so I'm gonna do both.

Displacement =

\int\limits^4_1 {s(t)} \, dt  \\\int\limits^4_1 {5t^2+t+2} \, dt \\\frac{5}{3}(4)^3+\frac{1}{2}(4)^2 + 2(4) - (\frac{5}{3}(1)^3+\frac{1}{2}(1)^2 + 2(1) )\\ = 118.5\\

total distance is just absolute value when using integral

\int\limits^4_1 {| s(t) |} \, dt

= 118.5

luckily it didn't matter for this problem, but there is a significant different between displacement and total distance, so remember to use absolute value signs when needed

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