A car moving at 72km/h when it begins to slow down from point 'A' with a deceleration of 1.5 m/s^2. How does it take to travel 70m to point 'B' as it slows down?​

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