HW Help!!! I have no idea how to answer these questions!!! 1) Newton's second law indicates that when a net force acts on an object, it must accelerate. Does this mean that when two or more forces are applied to an object simultaneously, it must accleerate? Explain. 2) A father and his seven-year-old daughter are facing each other on ice skates. With thei hands, they push off against one another. (a) Compare the magnitudes of the pushing forces that the experience. (b) Which one, if either, experiences the larger acceleration? Acocount for your answers. 3) According to Newton's third law, when you push on an object, the object pushes back on you with an oppositely directed force of equal magnitude. If the object is a massive crate resting on the floor, it will probably not move. Some people think that the reason the crate does not move is that the two opposite directed pushing forces cancel. Explain why this logic is faulty and why the crate does not move. 4) A 10-kg suitcase is placed on a scale that is in an elevator. Is the elevator accelerating up or down when the scale reads (a) 75 N and (b) 120 N? Justify your answers.