A biker rides east at a constant 10 mi/hr for 30 minutes, then rides west 12 miles at a constant 6 mi/hr. a. Draw a sketch showing the bikers trip. Label the starting point and ending point. b. On your sketch label her displacement with its value and its direction. c. Calculate the bikers average speed for the entire trip. d. Calculate the bikers average velocity for the entire trip.

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