A golf ball is struck across a flat fairway at an angle of 44° with an initial speed of 135 ft/s.
i) Write a set of parametric equations for the motion of the golf ball.
ii) Determine how long the golf ball was in the air.
iii) Determine how far the golf ball traveled in the air.
iv) Determine when the golf ball reached its maximum height.
v) Determine the maximum height reached by the golf ball.

The weibull distribution is widely used in statistical problems relating to aging of solid insulating materials subjected to aging and stress. use this distribution as a model for time (in hours) to failure of solid insulating specimens subjected to ac voltage. the values of the parameters depend on the voltage and temperature; suppose α = 2.5 and β = 190. (a) what is the probability that a specimen's lifetime is at most 250? less than 250? more than 300? (round your answers to four decimal places.) at most 250 less than 250 more than 300 (b) what is the probability that a specimen's lifetime is between 100 and 250? (round your answer to four decimal places.) (c) what value is such that exactly 50% of all specimens have lifetimes exceeding that value? (round your answer to three decimal places.) hr