A package is dropped from a stationary balloon. It reaches the ground 3.2 s later. The package is modelled as a particle moving freely under gravity. Use g=9.8 m s−2g=9.8\text{ m s}^{-2}g=9.8 m s−2.
Find the height of the balloon above the ground when the package was released.
Find the speed of the package immediately before impact.
Explain how air resistance would affect the value found in part (a) if the measured time remains 3.2 s.