Question

The distance vs. time graph of a car moving at constant speed should be a straight line. Why do the data points in the graph plotted from observing the motion not fall right on the line? A. The distance is not exactly proportional to time even if the speed is exactly constant. B. The distance and time are proportional only if the correct units of meters an seconds are used. C. Data points can never look like they fall right on a straight line. D.The measurements are inexact.

Answer 1

C. Data points can never look like they fall right on a straight line.

Explanation:

Actually it is not so easy to identify a body that moves with perfect uniform Rectilinear Movement and naturally, there may be several causes, but apparently the main one is the fact that every time there is a movement, on a surface (a street for example) an impediment to movement appears, like friction. And due to that effect, the Object (a car for example) will not move with with perfect uniform Rectilinear Movement. Indeed, a straight line graph is an approximation of movement.

Answer 2

The data points in the graph plotted from observing the motion does not fall right on the line because the measurements are inexact. The correct option among all the options that are given in the question is the last option or option "D". I hope that the answer has come to your help.