The mechanical energy of the drone at the 150 m height is a) 0 J.
The energy obtained by the objects upon which work exists done exists known as mechanical energy. Mechanical energy exists as the energy that is maintained by an object due to its motion or due to its position.
Mechanical energy exists as the sum of potential energy and kinetic energy. The principle of conservation of mechanical energy expresses that if an isolated system exists subject only to conservative forces, then the mechanical energy stands constant.
Mechanical energy (kinetic energy or potential energy) exists as the energy of either an object in motion or the energy that stands reserved in objects by their position. Mechanical energy stands also a driver of renewable energy.
The mechanical energy = The kinetic energy + Potential energy
Therefore, Provided that the drone stars motion from the surface and existed initially at rest, the mechanical energy at the surface = 0.
Hence, The correct option is A.
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