Question

a teacher has a habbit at walking to and from between the left and right ends of the class room at a uniform speed while lecturing she pauses for a fixed interval of time every time she reaches an end let the left and right ends of her path be at x =-l and x=+l respectively if at t=0 she starts moving from the right end which of the following x=-t graphs describe her motion​

Answer 1

Explanation:

option B is right answer.

because she started from right i.e from +L

then moves Left -L.

and she stops for some time.