Question

After performing a long equation using the conservation of mechanical energy you get a final answer that is negative. What does this mean?

A. Because energy is scalar it means that the energy is less than 0.

B. Because energy is scalar it means that the energy was transferred somewhere else.

C. Because energy is a vector it means that the energy was destroyed in the opposite direction.

D. Because energy is scalar it means that the energy was destroyed.

Answer 1

The correct option is D.

Step-by-step explanation:

The energy is the capacity to do work.

There are several types of energies.

1. kinetic energy : it is due to the motion of the body.

2. Potential energy : It is due to the position or the configuration of the body.

3. Mechanical energy: The sum of the kinetic energy and the potential energy is called mechanical energy.

The energy is a scalar quantity.

According to the law of conservation of energy, the energy can not be created and cannot be destroyed, it can transformed from one form to another.

When we get the mechanical energy negative, it means the energy was destroyed in some other forms of energy.