# ch02_a.pdf - Chapter 2 Part 1 of 2 Example Problems &...

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Chapter 2Example Problems & Solutions(useful for homework)Part 1 of 2
11. A whale swims due east for adistance of 6.9km, turns around andgoes due west for 1.8km, and finallyturns around again and heads 3.7kmdue east. (a) What is the total distancetraveled by the whale? (b) What are themagnitude and direction of thedisplacement of the whale?
99. A bicyclist makes a trip that consists of threeparts, each in the same direction (due north)along a straight road. During the first part, sherides for 22 minutes at an average speed of 7.2m/s. During the second part, she rides for 36minutes at an average speed of 5.1 m/s. Finally,during the third part, she rides for 8.0 minutes atan average speed of 13 m/s. (a) how far has thebicyclist traveled during the entire trip? (b) Whatis her average velocity for the trip ?

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Velocity, 4 15 m s, Dan Koko, Vegas World Hotel