1. It is dangerous "cutting" in front of trucks when turning left or passi g them and then slowing down
because:
Brakes on trucks are very poor
Trucks take twice as long to stop
Trucks have the right of way

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