Can someone me really quickly? ?
one group of gases responsible for destroying ozone in the ozone layer is
a. carbon monoxide and carbon dioxide
b. nitrogen oxides and sulfur oxides
c. cfcs
d. automobile emissions

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.