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A person walks 1.55 km north and then 2.75 km east, all in 3.00 hours.

A person walks 1.55 km north and then 2.75 km east, all in 3.00 hours. 


(a) What is the magnitude (in km) and direction (in degrees north of east) of her displacement during the given time? 

(b) What is the magnitude (in km/h) and direction (in degrees north of east) of her average velocity during the given time?

(c) What was her average speed (in km/h) during the same time interval? 

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