The world’s fastest warship belongs to the united states navy. this vessel, which floats on a cushion of air, suppose that during a training exercise the ship accelerates +2.67 m/s2, so that after 15.0 s its displacement is +6.00 × 102 m.

assume that the ship moves in a straight line.

calculate the ships final velocity after the acceleration.

Two loudspeakers, 5.5 m apart and facing each other, play identical sounds of the same frequency. you stand halfway between them, where there is a maximum of sound intensity. moving from this point toward one of the speakers, you encounter a minimum of sound intensity when you have moved 0.33 m . assume the speed of sound is 340 m/s. part a) what is the frequency of the sound? part b) if the frequency is then increased while you remain 0.21 m from the center, what is the first frequency for which that location will be a maximum of sound intensity? express your answer to two significant figures and include the appropriate units.