Assume that your recording timer imprints 53 dots/s. suppose that the distance covered by 8 consecutive dots on the tape is 2.7 cm. what is the average velocity of the mass during that interval in meters per second

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.