Question 5.A 5.0-kg bag of groceries is dropped from a height of 1.0 m. What is the final speed of the bag just as it touches the ground? Ignore air
resistance for this problem.
A. 1.1 m/s
B. 4.4 m/s
C. 5.5 m/s
D. 22 m/s

In the conservation of mass, mass (which is the same as energy) can never be created or destroyed in the same way oil is formed from the remains of small animals and plants that died and fell to the bottom of the sea and their mass (energy) is conserved as oil.

The force that opposes gravity for falling objects is  air resistance.  (d)

W= δenergymg = 20.0 nenergy is potential energy.w = δek = mgh = (20.0 n) * 1.50 m = 30.0j30.0 j is done on the object.

Ok i will forget i ever saw anything at all