A mass oscillates vertically on the end of a spring. It takes 2 seconds for the mass to move from its lowest point to its highest point. What is the frequency of the oscillation? Give your answer in Hertz, to two significant figures and without a unit. Show Work

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.