Question

which observation is most likely made about their relative movement? a. to each other, andrea and talia appear to stand still, then move forward. b. to janette, andrea and talia appear to stand still, then move forward. c. to each other, andrea and talia appear to be continually moving. d. to janette, andrea and talia appear to be continually moving.

Explanation:

Relative motion depends on the observer's frame of reference. If Janet is walking on the moving walk - way and Andrea and Talia are on the walk - way too, from Janet's perspective, Andrea and Talia would seem to stand still initially as they are all on the same moving platform, and then move forward when they start walking relative to the walk - way.

Answer:

B. To Janet, Andrea and Talia appear to stand still, then move forward.