Kinetic energy and potential energy together are called which form of energy?
Mechanical
The correct answer is Mechanical Energy.
Mechanical energy is the sum of kinetic energy and potential energy in a mechanical system. Kinetic energy is the energy of motion, while potential energy is stored energy due to position or configuration. Examples of mechanical energy include a moving car (kinetic energy), a stretched spring (potential energy), or a pendulum swinging (both kinetic and potential energy).
Let's examine why the other options are incorrect:
- Chemical energy is stored in the bonds of molecules and is released during chemical reactions (e.g., burning fuel).
- Thermal energy is the internal energy of an object due to the kinetic energy of its atoms and molecules (related to temperature).
- Nuclear energy is stored within the nucleus of atoms and is released during nuclear reactions (e.g., nuclear fission).
Therefore, only mechanical energy directly encompasses both kinetic and potential energy forms.
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