Kaylee is practicing a solo to perform at her next choir concert. Kaylee's teacher tells her that the pitch of her voice is too high. How should Kaylee change the sound waves she creates to sing in a lower pitch?

Asailboat is traveling to the right when a gust of wind causes the boat to accelerate leftward at 2.5m/s2 for 4s. after the wind stops, the sailboat is traveling to the left with a velocity of 3.0m/s.assuming the acceleration from the wind is constant, what was the initial velocity of the sailboat before the gust of wind? answer using a coordinate system where rightward is positive.