Question

Calc. Help please?

Answer 1

A particle is moving along the x-axis so that its position at t ≥ 0 is given by s(t) = (t)In(3t). Find the acceleration of the particle when the velocity is first zero.

I guess it's that last part that's really getting me.

When I first saw "find the acceleration..." I thought "find the second derivative" and then "find when the first derivative is equal to 0"

Answer 2

What am I understanding incorrectly?

Answer 3

Logic sounds correct :)
Make a boo boo in your derivative?

Answer 4

The second derivative of position is acceleration

Answer 5

Ha, yeah as zep mentioned maybe you made a mistake in the derivative, you will have to apply the product rule first

Answer 6

I didn't get the derivative wrong (wolfram). And my "second thought" isn't one of the answer choices.

Answer 7

What is the first derivative?

Answer 8

t=1/(3e), this what you get for the time?

Answer 9

for first derivative, ln(3t)+1

Answer 10

Yes, zep

Answer 11

And a(t)=3e isn't one of our options? :OO
Hmm

Answer 12

OH! That's what it's asking!

Answer 13

lol you silly billy >.<
darn I just gave it away

Answer 14

lol

Answer 15

Every once in a while, I'll get a question where I otherwise know what to do, it just doesn't compute. Thanks!

Answer 16

cool c:

Answer 17

That's why I come here. Thanks!