Gretchen and mika are involved in a relay race. both runners are at the same point on the course when gretchen realizes that she dropped her baton and has to turn around to retrieve it. gretchen runs backward at a speed of -4 meters per second, relative to the direction of the race. mika continues running at a speed of 3 meters per second. if gretchen dropped her baton -48 meters from her current location, relative to the direction of the race, how far ahead will mika be when gretchen picks up her baton?