If s(t) = (1/3)(t^3) - (3/2)(t^2) - 18t
During what time is the object moving towards the origin?
I know I set s(t)v(t) < 0, but from there on Iím a little stuck.
When the velocity is 10m/s, find its displacement.
My answers to this were : -511/6, and 208/3
Is this correct?
How many times does the object cross a marker on the line located at s = 20?
Iím not sure how to do this one.
Any help is appreciated.