A stationary frame of reference refers to the observer viewing something moving.

A stationary frame of reference refers to the observer viewing something moving.

• A. Relative
• B. Inertial
• C. False
• D. True

Answer: (D)

Motion is relative, and a frame of reference is the viewpoint you use to describe how things move. A stationary frame of reference means the observer isn’t moving. From that fixed viewpoint, objects can still have velocity and appear to move relative to you—for example, a car driving past you while you stand on the sidewalk. So describing a stationary frame as one where the observer views something moving is correct, because motion is observed relative to the observer’s fixed position. Note that inertial frames are about being non-accelerating, which is related but not the focus here; the statement is about the observer’s stationary perspective and observing motion.

Motion is relative, and a frame of reference is the viewpoint you use to describe how things move. A stationary frame of reference means the observer isn’t moving. From that fixed viewpoint, objects can still have velocity and appear to move relative to you—for example, a car driving past you while you stand on the sidewalk. So describing a stationary frame as one where the observer views something moving is correct, because motion is observed relative to the observer’s fixed position. Note that inertial frames are about being non-accelerating, which is related but not the focus here; the statement is about the observer’s stationary perspective and observing motion.