Question

??

Answer 1

go! your answer

Answer 2

?

Answer 3

do you have an approach?

Answer 4

I think I have to derive this

Answer 5

\(\large\rm a(t)=s''(t)\)
Yes.
And they want you to find \(\large\rm a(2)\)

Answer 6

\(\large\rm s'(t)=?\)

Answer 7

It equals 3t^2/2√(t^3+1)

Answer 8

Good :)

Answer 9

Oo looks like you'll need `quotient rule` to achieve that second derivative, ya? :o

Answer 10

Yesss and I got 3t(t^3+4)/4(t^3+1)^(3/2)

Answer 11

So would I just plug 2 into that?

Answer 12

Hmm I got something very similar, but a (t^3+1)^(5/2) in the bottom.
Lemme make sure I didn't make a boo boo somewhere.

Answer 13

Woops :) Ya I did.
Looks like you are correct!

Yes, proceed to plug in t=2.

Answer 14

And then I got 2/3

Answer 15

yayyy good job \c:/

Answer 16

and the units are going to be ft/sec^2 in case you need that as well.

Answer 17

Okay thank you so much!