141 Fall 2019 #10 Please read carefully and answer properly Question Title * 1. In order to receive credit, we need your name First Name Last Name Question Title I wish to suspend a massive ball on a stiff, light bar from a wall. The bar is attached to the wall at left but can pivot freely. I am going to attach a cable in one of the four patterns as shown below. Question Title * 2. Please rank the tensions in the above diagram to compare what the tension would be for each of the geometries. a > b > c > d d > c > b > a a > b > d > c a > c > b > d c > d > b > a a = b = c = d there is not enough information given to answer this Question Title I decide to go with option "b" above and I consider what force the pivot at the left side of the bar is providing on the bar. From the choices below, please identify the direction of the "reaction force" provided by the pivot to the bar. Question Title * 3. Which vector direction represents that of the direction of the force provided by the pivot to the end of the bar 1 2 3 4 5 6 7 8 F = 0 There's not enough information to answer the question Question Title * 4. You’re driving your car and slam on the breaks when a dog jumps into the road in front of you. You skid to a stop over a distance. Good thing you weren’t going faster! If your speed had been twice as fast, how far would you have skidded?In order to answer this, which lens(es) do you find most helpful momentum energy forces kinematics Question Title * 5. In answering the above question: If you double your speed, by what factor does your stopping distance change 2 4 8 18 square root of 2 stays the same there's not enough information Question Title I roll three identical marbles down the tracks below Question Title * 6. How do the final speeds of the balls compare as they exit the tracks? a = b = c a > b > c c > b > a b > a > c c > a > c not enough information Question Title * 7. How do the times to execute the transit compare for the three tracks? a = b = c a > b > c c > b > a b > a > c c > a > c not enough information Done