The Equivalence Principle Says That a Person in an Elevator

question 123

Multiple Choice

The equivalence principle says that a person in an elevator that is in free fall feels the sameacceleration as:

• A)a person in an elevator going up with an acceleration of g.
• B)a person in space, far from any gravitational source accelerating at g.
• C)a person in an elevator going down with an acceleration of g.
• D)a person in space, far away from any gravitational source with no acceleration.
• E)a person in orbit of Earth accelerating at g upward.

---

Definitions:

Neutral Traits

Genetic traits that do not provide any selective advantage or disadvantage, thus not subject to natural selection.

Variation Range

The difference between the highest and lowest values in a set of data, measuring the spread or dispersion of the data points.

Exaptation

A trait that becomes used for an entirely new purpose during evolution.

Key Innovation

An evolutionary adaptation that gives its bearer the opportunity to exploit a particular environment more efficiently or in a new way.