A cargo helicopter descending steadily at a speed of 36 ms

Question

Compute all parts of given problem:

Problem: A cargo helicopter, descending steadily at a speed of 3.6 m/s, releases a small package. Let upward be the positive direction for this problem.

Part A: If the package is 68 m above the ground when it is dropped, how long does it take for the package to reach the ground?

s

Part B: What is its velocity just before it lands? (Indicate the direction with the sign of your answer.)

m/s

Please provide clear step by step solution with notes on concepts and equations being used.