Anna drew a diagram to compare the strong and weak force. Which labels belong in the areas marked X, Y, and Z? X: infinite range Y: attractive and repulsive Z: very small range X: attractive only Y: very small range Z: attractive and repulsive X: attractive and repulsive Y: infinite range Z: attractive only X: very small range Y: attractive only Z: infinite range

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.