hw3 - homework 03 Turner (58185) This print-out should have...

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print-out should have 12 questions. Multiple-choice questions may continue on the next column or page – fnd all choices beFore answering. 001 10.0 points The graph below shows the velocity v as a Function oF time t For an object moving in a straight line. t v 0 t Q t R t S t P Which oF the Following graphs shows the corresponding displacement x as a Function oF time t For the same time interval? 1. t x 0 t Q t R t S t P 2. t x 0 t Q t R t S t P 3. t x 0 t Q t R t S t P 4. t x 0 t Q t R t S t P 5. t x 0 t Q t R t S t P 6. None oF these graphs is correct. 7. t x 0 t Q t R t S t P 8. t x 0 t Q t R t S t P correct 9. t x 0 t Q t R t S t P Explanation: The displacement is the integral oF the ve- locity with respect to time: Vx = i Vv dt . Because the velocity increases linearly From zero at frst, then remains constant, then de- creases linearly to zero, the displacement will increase at frst proportional to time squared, then increase linearly, and then increase pro- portional to negative time squared. ±rom these Facts, we can obtain the correct answer. t x 0 t Q t R t S t P 002 (part 1 oF 5) 10.0 points The Following 5 questions reFer to a toy car which can move to the right or leFt on a horizontal surFace along a straight line (the + distance axis). The positive direction is to the right. DiF- Ferent motions oF the car are described be- low. Choose the acceleration-time graph which corresponds to the motion oF the car described in each statement. homework 03 – Turner – (58185)
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This note was uploaded on 03/26/2010 for the course PHY 303K taught by Professor Turner during the Fall '08 term at University of Texas at Austin.

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hw3 - homework 03 Turner (58185) This print-out should have...

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