Two people can swing on a trapeze at the same time as long as their total weight is less than 500 pounds Joe weighs 240 lb and is 6 feet tall Jake weight 250 lb is 32 years old can Joe and Jake swing on the trapeze at the same time too much information or too little information

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)