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Which changes would result in a decrease in the gravitational force btween two objects? check all that apply

Acid precipitation chemically weathering a 5.0-kg limestone rock . which coukd be the result ?

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.