) A physics lab group is trying to roll two marbles off two ramps of different heights
and get them to collide. The group gathers data and determines that the marble from
the left ramp will roll at a speed of 0.4 m/s on the ground while the marble from the
right ramp will roll at a speed of 0.9 m/s on the ground. The group decides they want
both marbles to hit the ground at the same time, roll across the floor for 1.5 seconds,
and then collide. How far apart should the bottoms of the ramps be placed so that
the two marbles will collide after 1.5 seconds?