Mark and sofia walk together down a long, straight road. they walk without stopping for 4 miles. at this point sofia says their displacement during the trip must have been 4 miles; mark says their current position must be 4 miles.
1. who, if either, is correct? a) markb) mark, only if their starting point is the origin of a coordinate systemc) sofia, only if their starting point is the origin of a coordinate systemd) sofia

b

Step-by-step explanation:

Displacement and distance have different meanings. Displacement is a vector quantity and is the objects overall change in position. Distance is scalar quantity which describes how much ground an object covers during motion.

If they have covered 4 miles from a origin and we don't know the origin but we know that they start there and continue for 4 miles. It will be displacement if they started at a distance and walked a certain distance and the difference from start to finish is 4 miles. Therefore, it must be distance because we don't know the initial position and only that they walked 4 miles.

Mark is right if their starting point is a origin of a coordinate system

30 people weigh 160 pounds or more

step-by-step explanation:

is their an equation anywhere i can take a   look at it and see if i am right.