Answer:
<em>The penny will hit the ground at 6.39 seconds</em>
Explanation:
<u>Free Fall</u>
The penny is dropped from a height of y=200 m. The equation of the height on a free-fall motion is given by:

Where
, and t is the time.
Solving for t:

Using the value y=200:

t=6.39 sec
The penny will hit the ground at 6.39 seconds
The acceleration will be slower
Law of inertia
F=Ma 2 times slower
Answer: I added a picture of the answer
Explanation: its right
A wave loses energy as it moves through a medium.