Please help show work! A boy pulls a 48 kg crate with a rope horizontally across the floor. The coefficient of kinetic friction for the crate and the deck is 0.300. The boy exerts a force of 185 N. Draw a free body diagram of the forces acting on the crate. Does the crate accelerate, and if it does at what rate? How fast is it going after 1.2 s, if it started at rest?​

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