Apple1010

15.06.2021 • 

Physics

Alice is going on a picnic and is aware that it will be easier to carry the picnic basket if it balances at the center where the handle is attached. She has placed a 1.95-kg container of potato salad at one end and a 0.675-kg package of hot dogs at the other end of a 52.0-cm long basket. Determine where she should place a 1.95-kg container of lemonade so that the basket balances at its center. cm from the center, ---Select---

Ответ:

chrisroth2924

08.06.2020

Physics

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t = -4/3 s, t = 4/3 s

Explanation:

I am ASSUMING that you want to know the time(s) the particle is at rest.

and that your position equation is x(t) = 16t − 3.0t³

IF those assumptions are true

THEN

velocity is the derivative of position

v(t) = 16 - 9t²

the particle will be at rest when velocity is zero

0 = 16 - 9t²

9t² = 16

t² = 16/9

t = ± 4/3

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