A bicyclist makes a trip that consists of three parts, each in the same directio

Question

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 23.3 minutes at an average speed of 9.40 m/s. During the second part, she rides for 30.7 minutes at an average speed of 4.98 m/s. Finally, during the third part, she rides for 12.0 minutes at an average speed of 15.2 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? Number 3960 Units s Number 9.86 Units m/s

Explanation / Answer

distance for first part=9.4*23.3*60=13141.2 m

distance for second part=30.7*60*4.98=9173.16 m

for third part =12*60*15.2=10944 m

(a) total distance=33258.36 m

(b) average speed=total distance/total time

time should be taken in seconds

speed=8.39 m/s

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