) 1.) Tim is pushing a box. The box slides along the floor and then comes to a stop. Using
Newton's First Law of Motion, explain why the box stops moving. (Use the words of
Newton's 1st Law of Motion)
2.) Tim is pushing a box. The box slides along the floor and then comes to a stop. A book is added to the box. Using Newton’s Second Law of Motion, explain how the force needed to move the box would change. (Use the terms of Newtons Second Law of Motion)

As you are trying to move a heavy box of mass m, you realize that it is too heavy for you to lift by yourself. there is no one around to , so you attach an ideal pulley to the box and a massless rope to the ceiling, which you wrap around the pulley. you pull up on the rope to lift the box. use g for the magnitude of the acceleration due to gravity and neglect friction forces. once you have pulled hard enough to start the box moving upward, what is the magnitude f of the upward force you must apply to the rope to start raising the box with constant velocity? express the magnitude of the force in terms of m, the mass of the box.