4. During a thunderstorm, a tornado lifts a car to a height of 125 m above the ground. Increasing in strength, the tornado
flings the car horizontally with an initial speed of 90 m/s.
a. How long does the car take to reach the ground?
b. How far horizontally does the car travel before hitting the ground?

When a vertical beam of light passes through a transparent medium, the rate at which its intensity i decreases is proportional to i(t), where t represents the thickness of the medium (in feet). in clear seawater, the intensity 3 feet below the surface is 25% of the initial intensity i0 of the incident beam. what is the intensity of the beam "10" feet below the surface? (give your answer in terms of i0. round any constants or coefficients to five decimal places.)