A group of physics students hypothesized that for an experiment they are performing, the speed of an object sliding down an inclined plane will be given by the expression. U = 2 * 9.8* 0.725(sin 45) - 0.120(cos 45)
For their experiment, d =0.725 meter,-45.0°, μ* 0.120, and g = 9.80 m/s?
a. 3.15 m/s
b. 6.25 m/s
c. 2.97 m/s
d. 2.43 m/s

it doesn't. it was imagined up in the middle ages.

  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.