A helicopter which was ascending vertically at a steady velocity of 20m/s, released a parcel that took 20 second to reach the ground.
A. State the direction in which the parcel moved immediately it was released
B. Calculate the time taken by the parcel to reach the ground from the maximum height.
C. Calculate the velocity of the parcel when it strikes the ground.
D. What was the height of the helicopter at the instant the parcel was dropped