A 75.0 kg astronaut connected by a 20 m long tether to a satellite is initially rotating about the satellite at 5.0 m/s. As the astronaut rotates the tether gets wrapped around the satellite. Find the speed of the astronaut when the tether is 7.0 m long.

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