Two cyclists start on a race between points a and d on two different routes. cyclist x takes the route passing through the equidistant points a-b-c-d, each separated by a distance of 200 meters. cyclist y takes the direct route ad, which has a total length of 546.41 meters. both cyclists reach the end point in 30 seconds. calculate the displacement and average velocities of cyclists x and y.

Which statement best describes the superposition principle? a.) if two in-phase waves arrive simultaneously at a point, their amplitudes add up b.) if two out-of-phase waves arrive simultaneously at a point, their amplitudes add up c.) if two in-phase waves arrive at a point one after another, their amplitudes add up d.) if two out-of-phase waves arrive at a point one after another, their amplitudes adds up