Chromatic aberration is caused by:
A: imperfect shape of lens
B: uneven filtering of various colors
C: different refraction of the light spectrum
D: uneaven reflection of light colors

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.