you drop your broken phone from a 200 ft tall roof onto the sidewalk. How long will it take for the phone to hit the ground? Use

If the wwight of a package is multiplied by 7/10 the result is 65.8 find the weight of the package

Select the lengths in centimeters that would form a right triangle

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)