A 5.0 kg object is pushed across the floor and the attached force vs. displacement graph describes
the forces and displacement. What is the change in
KE of the object? (Hint: Net work = change in
kinetic energy)

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