Energy and Work Fundamentals

Chemical energy

Potential energy

Nuclear energy

Kinetic energy (correct)

The total amount of energy in the Universe can only be transformed from one form to another, but not changed.

The total amount of energy in the Universe never changes, even as energy is transformed from one form to another. (correct)

The total amount of energy in the Universe increases as energy is transformed from one form to another.

The total amount of energy in the Universe decreases as energy is transformed from one form to another.

Work in physics is defined as the force applied to an object multiplied by the time it takes to move the object, which is different from the everyday usage of the term.

Work in physics is defined as the force applied to an object multiplied by the acceleration of the object, which is different from the everyday usage of the term.

Work in physics is defined as the force applied to an object multiplied by the distance it moves, which is different from the everyday usage of the term. (correct)

Work in physics is defined as the force applied to an object multiplied by the velocity of the object, which is different from the everyday usage of the term.

<p>The force and the displacement must be in the same direction for the equation to apply.</p> Signup and view all the answers

<p>The SI unit for work is the newton-meter (Nm), which is equivalent to the joule (J).</p> Signup and view all the answers

<p>The work done by a force is zero when the force and the displacement are perpendicular to each other.</p> Signup and view all the answers