Consider the following descriptions of the vertical motion of an object subject only to the acceleration due to the gravity.
(note: the acceleration due to the gravity is 9.8m/s^2.)

a.) find the velocity of the object for all relevant times.
b.)find the position of the object for all relevant times.
c.) find the time when the object reaches the highest point (what is the height)?
d.) find the time when the object strikes the ground.

a payload is released at an elevation of 400m from an hot-air balloon that is at a rising rate of 11m/s