It\'s a lovely day and Jane wishes to ride her bike around a circular track of r

Question

It's a lovely day and Jane wishes to ride her bike around a circular track of radius 25 meters. She drives exactly half a lap before coming to a stop again. Refer to the figure below to see the layout of the track. Jane's starting point is indicated with an X and she travels south when she first starts moving. It takes her 30 seconds to ride the half lap. Use the North, South, East, West directions in your answers as needed. a) What is the distance Jane traveled? b) What is Jane's displacement? c) What is Jane's average speed? d) What is Jane's average velocity?

Explanation / Answer

A) Distance covered = pi r = pi*25 = 78.54 m

B) displacement = 2r = 2*25 = 50 m

C) average speed = distance /time = 78.54/30 = 2.62 m/s

D) average velocity = displacement /time = 50/30 = 1.67 m/s

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