Larry and balky set up an experiment to analyze the motion of a marble as it rolled down an incline. they started the marble at the top of the ramp and set up photogates to collect data as the marble rolled down the ramp. which graph format would allow larry and balky to calculate instantaneous velocity using slope? a) velocity on the y-axis, time on the x-axis b) distance on the y-axis, time on the x-axis c) time on the y-axis, distance on the x-axis d) velocity on the y-axis, distance on the x-axis