Math141Mid2S11

Math141Mid2S11 - Math 141 Name: _ MIDTERM 2 PART 1...

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Math 141 Name: ________________________ MIDTERM 2 – PART 1 (CHAPTERS 2 AND 3) MATH 141 – SPRING 2011 – KUNIYUKI 150 POINTS TOTAL: 56 FOR PART 1, AND 94 FOR PART 2 Show all work, simplify as appropriate, and use “good form and procedure” (as in class). Box in your final answers! No notes or books allowed. Unless otherwise specified, give exact answers. Write units where appropriate in your answers. PART 1: SCIENTIFIC CALCULATORS ALLOWED! (56 POINTS TOTAL) 1) Write the “Vertex Form” of the equation of the parabola in the usual xy -plane that has ± 1, 4 () as its vertex and that passes through the point 1, ± 16 . (7 points)
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2) An astronaut kicks a ball over a flat region of a (very) distant moon. The height of the ball in feet is given by: ht () = ± 3 t 2 + 18 t + 2i f t ² 0 , where t is the amount of time in seconds since the ball was kicked. (The formula is relevant up until the time the ball hits the ground.) (19 points total) a) Use a formula we used in class to find how much time it takes (since the ball was kicked) for the ball to reach its maximum height. b) What is the maximum height achieved by the ball? c) What was the height of the ball at the time it was kicked?
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Reminder: An astronaut kicks a ball over a flat region of a (very) distant moon. The height of the ball in feet is given by: ht () = ± 3 t 2 + 18 t + 2i f t ² 0 , where t is the amount of time in seconds since the ball was kicked. (The formula is relevant up until the time the ball hits the ground.)
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This note was uploaded on 09/08/2011 for the course MATH 141 taught by Professor Staff during the Fall '11 term at Mesa CC.

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Math141Mid2S11 - Math 141 Name: _ MIDTERM 2 PART 1...

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