Ateenager walks 400m from her home to the grocery store and then return her home. if she left her house at 4: 53 pm and returned home st 5: 37pm what is average speed in m/s what is average velocity

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.