03_InstSolManual_PDF

03_InstSolManual_PDF - 3-1MOTION IN APLANE3Answers to...

Info iconThis preview shows pages 1–4. Sign up to view the full content.

View Full Document Right Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: 3-1MOTION IN APLANE3Answers to Multiple-Choice Problems1. B2.A3. C4. C5.A6. B7. B8.A9. C10. C11.A12. C13. D14. B15. D16. B17. BSolutions to Problems3.1. Set Up:Since distances are given in km, use as units for velocity.Solve: (a)(b)and its components are shown in Figure 3.1.Figure 3.1and below the axis.3.2. Set Up:Since the velocity is expressed in units of and the time interval is in seconds, it is convenient toexpress the acceleration in mixed units of Solve: (a)(b)and its components are shown in Figure 3.2.Figure 3.2and below the 1x-axis.f 513.2,tanf 51vy2av1vx2avaav5" 1ax2av211ay2av25820 km/h#s;1ax2av1ay2avaavfyxOaSav218.7 km/h#s1ay2av5DvyDt5365 km/h2415 km/h6.52 s23.85 s51ax2av5DvxDt5838 km/h2625 km/h6.52 s23.85 s579.8 km/h#s;km/h#s.km/h1xf 512.4,tanf 51vy2av1vx2avvav5" 1vx2av211vy2av251.12 km/s;1vx2avvav1vy2avyxfOvSav1vy2av5DyDt50.925 km21.20 km1.14 s5 20.24 km/s1vx2av5DxDt56.24 km25.00 km1.14 s51.09 km/s;km/s3.3. Set Up:Coordinates of point Aare and for point Bthey are Solve: (a)At A,(b)and its components are shown in Figure 3.3a. and counterclock-wise from the Figure 3.3(c)(d)and its components are shown in Figure 3.3b. andcounterclockwise from the the Refect:The displacement of the dragonfy is in the direction of 3.4. Set Up:The time to travel from point Ato point Bis 1.50 s, as given in Problem 3.3.Solve: (a)(b)and its components xand yare shown in Figure 3.4. and counterclockwise from the Figure 3.4f1ay2av1ax2avaavxyO1x-axis.f 5124,tanf 51vy2av1vx2avaav5" 1ax2av211ay2av252.54 m/s2;aSav1ay2av5DvyDt58.26 m/s25.11 m/s1.50 s52.10 m/s21ax2av5DvxDt54.05 m/s26.20 m/s1.50 s5 21.43 m/s2;vSav.1x-axis.f 532,tanf 51vy2av1vx2avvav5" 1vx2av211vy2av256.2 m/s;vSav1vy2av5DyDt56.0 m21.0 m1.50 s53.3 m/s1vx2av5DxDt510.0 m22.0 m1.50 s55.3 m/s;(b)O1vx2av1vy2avvavyxf(a)ruyyOxx1x-axis.u 526.6,tanu 5yxr5"x21y252.2 m;rSy51.0 m.x52.0 m,110.0 m, 6.0 m2.12.0 m, 1.0 m23-2Chapter 33.5. Set Up:The coordinates of each point are:A,B,C,D,At each point the velocity is tangent to the circular path, as shown in Figure 3.5. The componentsof thevelocity at each point are:A,B,C,D,Figure 3.5Solve: (a)A to BThe time for one full lap isAto Bis one-quarter lap and takes (b)A to C(c)C to D(d)A to Aso and so (e)ForAtoB,Thespeedisconstantsotheaverage speed is The average speed is larger than the magnitude of the average velocity because the distancetraveled is larger than the displacement.(f)Velocity is a vector, with both magnitude and direction. The magnitude of the velocity is constant but its directionis changing.Refect:For this motion the acceleration describes the rate of change of the direction of the velocity.6.0 m/s.vav5" 1vx2av211vy2av25" 13.8 m/s22113.8 m/s2255.4 m/s....
View Full Document

This note was uploaded on 06/10/2010 for the course PHY 185363 taught by Professor R during the Summer '09 term at Florida College.

Page1 / 20

03_InstSolManual_PDF - 3-1MOTION IN APLANE3Answers to...

This preview shows document pages 1 - 4. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online