A hiker gets lost in a forest. He walks half-way around a circle with a radius of 2.1 km in 2.0 hours.

a) What distance did he walk?

b) What was his average speed?

c) What was his displacement?

d) What was his average velocity?

A hiker walks 2.00 km north and then 3.00 km east, all in 2.50 hours. Calculate the magnitude and direction of the hiker's (a) displacement (in km) and (b) average velocity (in km/h) during those 2.50 hours, (c) What was her average speed during the same interval? 

Question: An athlete ran a distance of 100 meters in 9.83 seconds. What was his average speed?

An athlete runs three-fourths of the way around a circular track. Which of the following statements is true?

a. His average speed is greater than the magnitude of his average velocity.
b. The magnitude of his average velocity is greater than his average speed.
c. His average speed is equal to the magnitude of his average velocity.
d. His average speed is the same as the magnitude of his average velocity if his instantaneous speed is constant.
e. None of the above statements are true.