speed of the plane is given as

height of the plane is

acceleration due to gravity is

part a)
when package is dropped its vertical speed is zero so we can use kinematics to find the time of drop



Part b)
Horizontal distance moved by the package is given by



Part c)
final speed in x direction

final speed in y direction

so net speed as it hit the ground will be



<span>Supercooling
is lowering the temperature of liquid below its freezing point. This is also
known as the cooling of liquid. Supercooling can be minimized by cooling the
liquid and steering the liquid fast while it is freezing. Freezers in the
refrigerators shows the example activity of supercooling.</span>