# More practice with elimination. Use elimination to solve these problems. You will be required to use

More practice with elimination. Use elimination to solve these problems. You will be required to use
More practice with elimination. Use elimination to solve these problems. You will be required to use elimination on a quiz or exam. It is strongly recommended that you neatly write out your work, step-by-step and in detail, on a separate sheet of paper. Write enough that someone could follow your work even if they did not know the problem and they did not know what you were trying to do. To keep track of the numbers, you may want to do the actual arithmetic on a spreadsheet such as Excel or Sheets, and then copy the numbers into your notes on paper. You may also know how to type these equations into your calculator so that you can simply push a “solve” button. In this class you will need to show that you can do elimination by hand, so don't use a solve button (at least not until after you have solved the problem by hand). 1) Experiment A: An object moved in one dimension with constant acceleration. x(t) = x + Vot+.5 agt? When t = 1.5 s, the object was at the location x = -3.35 m. When t = 3.5 s, the object was at the location x = -5.35 m. When t = 5.5 s, the object was at the location x = -5.75 m. Use elimination to find the initial position (xp), the initial velocity (Vo), and the constant acceleration (2) of the object. What was the initial position, xo? m Submit 2) In Experiment A, what was the initial velocity (vo) of the object? m/s Submit + 3) In experiment A, what was the constant acceleration (ao) of the object? m/s Submit + 4) More practice (take advantage of it!) Experiment B: An object moved in one dimension with constant acceleration. X(t) = x0+v0t+.5 a0 t2 When t = 2.5 s, the object was at the location x = 6.3 m. When t = 4.5 s, the object was at the location x = 11.1 m. When t = 6.5s, the object was at the location x = 19.1 m. Use elimination to find the initial position (XO), the initial velocity (vo), and the constant acceleration (20) of the object. What was the initial position, xO? mSubmit 5) In Experiment B, what was the initial velocity (Vo) of the object? m/s Submit 6) In experiment B, what was the constant acceleration (ao) of the object? 3) The student then combined equations 1 and 3 to produce another equation: Equation 5: V (3.0 s) + a, (Thing) = (Thing) What is the value of Thing? Submit + 4) What is the value of Thing? m Submit + 5) The next step is to eliminate another variable. We will eliminate vo next. The student then multiplied equation 5 (all of equation 5) by a number so that the coefficient of vo in equation 5 would be the same as the coefficient of voin equation 4. What is that number? Submit 6) After multiplying equation 5 by the number you calculated in question 5, the student came up with a new equation 5: New equation 5: Vp (2.0 s) – a (5 32) = (Things) What is the value of Things? m Submit + 7) The student then combined equation 4 with “new equation 5” to get an equation with only one unknown (the constant acceleration a.). What is the value of a? m/s' Submit 8) Using your value for 20, use equation 4 or either of the equation 5's to find the value of vo- m/s Submit 9) Use your values of a, and voto find the value of Xo- m Submit + Apr 11 2022 09:01 PM

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