What effect does inertia have on the motion of an object?

Aray of light traveling parallel to the principal axis of a concave mirror will be reflected through the mirror's

If y gets smaller as x gets bigger and y have an relationship?

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.