a submarine is searching for underwater features. it is accompanied by a small aircraft
and an underwater robotic vehicle.
at one time, the aircraft is 200 m above the surface, the submarine is 55 m below the
surface, and the underwater robotic vehicle is 227 m below the surface.
a.
what is the difference in height between the submarine and the aircraft?

The position of a moving particle is given by the position function: f(t)=-9t-t^2-0.2t^3+0.1t^4 0 a. at what time does the particle reverse direction? b. when is the displacement positive? (round one decimal place and answer in interval notation) c. when is the displacement negative? (round one decimal place and answer in interval notation) d. when is the particle’s acceleration positive? (round one decimal place and answer in interval notation) e. when is the particle’s acceleration negative? (round one decimal place and answer in interval notation)