If the vector potential far away from a current loop is но mxr2 where, 1 2 show that the magnetic field b(r2) is that of a dipole.

the total distance traveled by the car is

30km + 49km = 79 km .

  distance on the y-axis and time on the x-axis.

explanation:

the instantaneous velocity = change in position/time taken

the slope of the graph should give instantaneous velocity.

  slope of a graph = change in value of y -axis / change in values of x -axis

  comparing both the equations

    change in value of y -axis = change in position

  change in values of x -axis = time taken

so position values should be on the y axis and time values should be on the x axis.

distance on the y-axis and time on the x-axis.