un ciclista a los 20 segundos, si al bajar por una pendiente adquiere una aceleración cuya magnitud es de 12 m/s2 y parte con una velocidad inicial de 5 m/s

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