An old wheat-grinding wheel in a museum actually works. The sign on the wall says that the wheel has a rotational acceleration of 210 rad/s2 as its spinning rotational speed increases from zero to 1700 rpm . Part A How long does it take the wheel to attain this rotational speed?

grav forces affect all objects magnetic forces affect magnetic objects and electric currents

  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.

there are no contact forces mentioned on the list of choices that you've provided.