Energy that does not involve the large-scale motion or the position of objects in a system is called a. potential energy. b. mechanical energy. c. nonmechanical energy. d. conserved energy.

the correct answer is C. non mechanical energy  

Explanation: The stored energy resulting from the relative positions of objects in a system. The energy of a moving object due to its motion. The sum of the kinetic and potential energy of large-scale objects in a system. Energy that lies at the level of atoms and that does not affect motion on a large scale.

no. dot product   =0 when vecs at right angles

c. magnitude and direction