9. What is the "y-intercept" (or really, the v-intercept since we are plotting von the vertical axis of the graph)? What does this tell us about the motion of the ball?
Hint: Use the form: "The intercept tells us the value of when is zero

the answer is b, have negligible mass

  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.

hot magma rises and pushes up toward the lithosphere, and as it cools it cycles back down toward the core to be heated again.