Conceptual Questions Remember to explain all your answers in order to receive full credit. 1. (2 pt) An airplane runs into a ock of geese and smashes one of the birds. Who feels a larger force of impact the airplane or the smashed bird? 2. (2 pt) Whiplash sometimes results from an automobile accident when the victim's car is struck violently from the rear. Explain why the head of the victim seems to be thrown backward in this situation. Is it really? 3. (2 pt) A competitor in a \"strong man\" competition (let's call him Matt) is seen in the foreground of Fig. 439. He is able to move the large truck because (a) he is stronger than the truck. ([7) he is heavier in some respects than the truck. (.2) he exerts a greater force on the truck than the truck exerts back on him. (41) the ground exerts a greater friction force on Matt than it does on the truck. (e) the truck offers no resistance because its brakes are off. FIGURE L39 Mvs( unceptuul Qummn 1 4. (2) A coffee filter oats gently downward, at some constant ("terminal") velocity v. The net force on the coffee lter is: A Upwards; B: Dow-awards; C: Zero. Explain your answer. Which of the Newtons' law did you use? \\_1 (v Simulation and Computational Problems These problems require running of simulations (e.g., in Java Script) on your computer. He goal of these problems is the integration of physical concepts with computational tools. Please provide the answer to the questions and show work, e.g., by attaching screen shots and concise explanations. as needed. These problem are graded. l. (3pt) Solve \"Problem 4.3: Full your little red wagon\". https://www.compadre.og/Physlets/mechanics/prob473cfm 2. (4pt) Solve \"Problem 4.5: A buoy is dropped into a lake\". https://www.compadre.og/Physlets/mechanics/prob475cfm Problems The following problems will be graded. For full credit, please showyour work, including diagrams, algebraic equations, and enough written explanations that somebody who is not familiar with the problem could understand what you are doing. A final numerical answer is only one small part of a complete solution; an answer with no work shown will not be given any credit. 1. (5 pt) Giancoli Ch. 4 Problem 6 2. (6 pt) A set of eight boxes, 5.0 kg each, are stacked on top of a table, as shown in the gure below. (a) Draw a FED of the top-most box and find the normal force exerted on it by the box below. (b) Draw a FBD of the 2'\"1 box om the top, including all three (!) forces acting on it. Find the normal force acting on this box by the box below it. (c) Do you see a pattern now? Draw a FBD of the lowest box, including all three forces acting on it. What is the normal force that the table exerts on this box? HIHH ram- 3. (5 pt)(a) What is the acceleration of two falling sky divers (total mass : 132 kg including parachute) when the upward force of air resistance is equal to one-fourth of their weight? (b) If the upper person has a mass of 70 kg and the lower person 62 kg, what is the normal force exerted by each person on the other? See Fig. 444. FIGURE 444 4. (4 pt) An object hangs between two walls which are 1.8 m apart. Ifthe rope sags 15\" below horizontal and the object's mass is 1.5 kg, what is the tension in the rope? Be sure to draw a FBD of the shoe. 5. (6 pt) One 3.2-kg paint bucket is hanging by a massless cord from another 3.2-kg paint bucket, also hanging by a mass-less cord, as shown in Fig. 449. (.51) If the buckets are at rest, what is the tension in each cord? (3;) If the two buckets are pulled upward with an acceleration of 1.25 rm's2 by the upper cord, calculate the tension in each cord. You need to draw a FBD for each bucket