A 6-kg box is being pulled across the table to the right with an angle of 30 degrees below the horizontal at an acceleration of 5 m/s^2 with a force of 100N. A) Calculate the force of friction acting on the box.
B) Calculate the normal force acting on the box.

Calculate the first and second velocities of the car with four washers attached to the pulley, using the formulas v1 = 0.25 m / t1 , and v2 = 0.25 m / (t2 – t1) where t1 and t2 are the average times the car took to reach the 0.25 and the 0.50 meter marks. record these velocities, to two decimal places, in table e.