Chapter 02, Problem 11 A bicyclist makes a trip that consists of three parts, ea

Question

Chapter 02, Problem 11 A bicyclist makes a trip that consists of three parts, each in the same direction (due north) along a straight road. During the first part, she rides for 22.9 minutes at an average speed of 5.52 m/s. During the second part, she rides for 30.7 minutes at an average speed of 4.18 m/s. Finally, during the third part, she rides for 14.9 minutes at an average speed of 19.4 m/s. (a) How far has the bicyclist traveled during the entire trip? (b) What is the average speed of the bicyclist for the trip? (a) Number (b) Number Click if you would like to Show Work for this question: Units Units Open Show Work

Explanation / Answer

a)

distance traveled D = (22.9*60*5.52) + (30.7*60*4.18) + (14.9*60*19.4) = 32627.64 m

b)

average speed = total distance / total time

average speed = 32627.64/((22.9*60) + (30.7*60) + (14.9*60)) = 7.93 m/s

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