Select the correct answer. an airplane is flying at a constant speed in a positive direction. it slows down when it approaches the airport where it's going to land. which term describes the slowing of the plane? a.  stationaryb.  positive velocityc.  positive accelerationd.  negative acceleratione.  constant velocity

Arunner is training for an upcoming marathon by running around a 100-m-diameter circular track at constant speed. let a coordinate system have its origin at the center of the circle with the x-axis pointing east and the y-axis north. the runner starts at (x, y) = (50 m, 0 m) and runs 2.5 times around the track in a clockwise direction.