The mechanical energy of an object is equivalent to the sum of its potential and kinetic energy. If the helicopter is grounded, then its mechanical energy will be 20 J. If it is in the air, then its potential energy will be calculated using:P.E = mghAnd then added to the kinetic energy to obtain mechanical energy.
The ability to read and write!
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The answer would have to be "B."
Answer:
Serve as commander in chief of the armed forces
Commission officers of the armed forces
Grant reprieves and pardons for federal offenses (except impeachment)
Convene Congress in special sessions
Receive ambassadors
Take care that the laws be faithfully executed
Wield the "executive power"
Appoint Cabinet officials, White House staff and Supreme Court justices
Explanation: