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 backwards at a speed of −4 m/s, relative to the direction of the race. mika continues running at a speed of 3 m/s. 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 her baton up? meters