Question

The position of an object at any time t is given by
s(t)=3t4−40t3+126t2−9
.
1 Determine the velocity of the object at any time t.
2 Does the object ever stop changing?
3 when is the object moving to the right and when is the object moving to the left​

Answer 1

https://study.com/academy/answer/let-s-t-3t-4-6t-2-120t-for-0leq-tleq-3-denote-the-position-of-an-object-moving-along-a-line-find-a-the-velocity-at-time-t-b-the-acceleration-at-time-t-c-the-initial-and-ending-positions.html

from this u can see this answer