The first one to answer correctly for the brainliest.. four wooden rods are lenths 120cm 150cm 180cm in 240 cm respectively they are cut up into small pieces which are all of the same length what is the greatest possible length for these pieces if no wood is left?

The position of a moving particle is given by the position function: f(t)=-9t-t^2-0.2t^3+0.1t^4 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)