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Category: Physics
Type: Solutions
Tags: embed, dsmt4, equation, seconds, point, pecya, position, changes, value, collision, acceleration, mergeformat, found, velocity, constant, first, equation dsmt4, embed equation, dsmt4 embed, dsmt4 and, and embed, the van, over the, dsmt4 thus, seconds the
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Filename: Answers to Chapter 1 & 2.doc
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Description
Physics for Bioscience
Transcript
P1.41 EMBED Equation.DSMT4 We observe that EMBED Equation.DSMT4 .EMBED Word.Document.8 s mergeformat FIG. P3.19 So EMBED Equation.DSMT4 . The diagram shows that the angle from the x axis can be found by subtracting from 180 EMBED Equation.DSMT4 . P1.45 (a) EMBED Equation.DSMT4 (b) EMBED Equation.DSMT4 (c) EMBED Equation.DSMT4 (d) EMBED Equation.DSMT4 (e) EMBED Equation.DSMT4 EMBED Equation.DSMT4 P1.47 EMBED Equation.DSMT4 FIG. P3.59 P2.3 (a) EMBED Equation.DSMT4 (b) EMBED Equation.DSMT4 (c) EMBED Equation.DSMT4 (d) EMBED Equation.DSMT4 (e) EMBED Equation.DSMT4 P2.5 (a) at EMBED Equation.DSMT4 , EMBED Equation.DSMT4 (Point A) at EMBED Equation.DSMT4 , EMBED Equation.DSMT4 (Point B) EMBED Equation.DSMT4 (b) The slope of the tangent line is found from points C and D. EMBED Equation.DSMT4 and EMBED Equation.DSMT4 , EMBED Equation.DSMT4 .EMBED MSDraw mergeformat FIG. P2.7 (c) The velocity is zero when x is a minimum. This is at EMBED Equation.DSMT4 . P2.11 (a) Acceleration is constant over the first ten seconds, so at the end, EMBED Equation.DSMT4 . Then EMBED Equation.DSMT4 so v is constant from EMBED Equation.DSMT4 to EMBED Equation.DSMT4 . And over the last five seconds the velocity changes to EMBED Equation.DSMT4 . (b) In the first ten seconds, EMBED Equation.DSMT4 . Over the next five seconds the position changes to EMBED Equation.DSMT4 . And at EMBED Equation.DSMT4 , EMBED Equation.DSMT4 . P2.17 (a) EMBED Equation.DSMT4 becomes EMBED Equation.DSMT4 which yields EMBED Equation.DSMT4 . (b) EMBED Equation.DSMT4 P2.21 (a) EMBED Equation.DSMT4 , EMBED Equation.DSMT4 , EMBED Equation.DSMT4 so EMBED Equation.DSMT4 , EMBED Equation.DSMT4 so EMBED Equation.DSMT4 . Thus EMBED Equation.DSMT4 and EMBED Equation.DSMT4 . (b) At this acceleration the plane would overshoot the runway EMBED Equation.DSMT4 . P2.23 In the simultaneous equations EMBED Equation.DSMT4 we have EMBED Equation.DSMT4 . So substituting for EMBED Equation.DSMT4 gives EMBED Equation.DSMT4 EMBED Equation.DSMT4 . Thus EMBED Equation.DSMT4 . P2.27 Take the original point to be when Sue notices the van. Choose the origin of the x-axis at Sues car. For her we have EMBED Equation.DSMT4 , EMBED Equation.DSMT4 , EMBED Equation.DSMT4 so her position is given by EMBED Equation.DSMT4 . For the van, EMBED Equation.DSMT4 , EMBED Equation.DSMT4 , EMBED Equation.DSMT4 and EMBED Equation.DSMT4 . To test for a collision, we look for an instant EMBED Equation.DSMT4 when both are at the same place EMBED Equation.DSMT4 From the quadratic formula EMBED Equation.DSMT4 or EMBED Equation.DSMT4 . The smaller value is the collision time. (The larger value tells when the van would pull ahead again if the vehicles could move through each other). The wreck happens at position EMBED Equation.DSMT4 . P2.29 (a) EMBED Equation.DSMT4 EMBED Equation.DSMT4 when EMBED Equation.DSMT4 , EMBED Equation.DSMT4 . Therefore, EMBED Equation.DSMT4 . (b) EMBED Equation.DSMT4 EMBED Equation.DSMT4 P2.31 (a) EMBED Equation.DSMT4 EMBED Equation.DSMT4 and EMBED Equation.DSMT4 . (b) EMBED Equation.DSMT4 EMBED Equation.DSMT4 uvUlbd,M15m,Ma_qar Xz@_io2nTnVwVs0pYqmAeg.pCA_2wSGvYSUeaWN(UeQQzudJOx
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