Someone please tell me the answer with working please!! I

Which simple machine is not part of this compound machine? a. lever b. pulley c. inclined plane d. wheel and axle

The free body diagram shows a box being pulled to the left up a 25-degree incline. the magnitude of the normal force is

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.