A 25 Kg box is pulled by a rope at an angle of 30 degrees above horizontal with a force of 50 Newtons. if the coefficient of kinetic friction is .15. What is the total force of friction acting on the box? Using the information above, what is the acceleration of the box in the X-direction??

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.