## Scenario 6: A Falling Stone

###### System: Stone on Earth

###### Initial State: A small stone was at rest at the top of a very tall building.

###### Final State: The stone fell vertically and encountered air resistance. Its temperature increased slightly.

###### Remarks: The final state is to be taken when the stone was falling exactly halfway through the air.

Hint 1
Consider the principle of conservation of energy
Hint 2
Compare the amount of energy in the gravitational store when the stone is at the top of the building and when it is at the halfway point of its fall
Hint 3
Consider the type of energy transfer related to air resistance

##### Initial Amount of Energy of the System

##### System

##### Final Amount of Energy of the System

Energy / Units

C
E
G
I
K
N

Energy Transfer In:
Type Of Transfer
Propagation of waves Propagation of waves
Heating Heating
Electrically Electrically
Mechanically Mechanically
------------ ------------
Type Of Transfer
Propagation of waves Propagation of waves
Heating Heating
Electrically Electrically
Mechanically Mechanically
------------ ------------
Energy Transfer Out:
Type Of Transfer
Propagation of waves Propagation of waves
Heating Heating
Electrically Electrically
Mechanically Mechanically
------------ ------------
Type Of Transfer
Propagation of waves Propagation of waves
Heating Heating
Electrically Electrically
Mechanically Mechanically
------------ ------------

Energy / Units

C
E
G
I
K
N

##### Initial Energy of the System

+

##### Energy Transferred Into the System

=

##### Energy Transferred Out of the System

+

##### Final Energy of the System

Legend:

Electrically

Heating

C - Chemical
E - Elastic
G - Gravitational
I - Internal
K - Kinetic
N - Nuclear

Mechanically

Propagation of waves