Question
Asked Jan 23, 2020
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A girl on a bicycle takes 12.2 s to ride half way around a circular track of radius 20.0 m (see the figure below).

(a)What is the girl's average speed (in m/s)?
 
(b)
What is the magnitude of her average velocity (in m/s)?
R
Δι
t = 0
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R Δι t = 0

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Expert Answer

Step 1

(a) Write the expression for average speed

Advanced Physics homework question answer, step 1, image 1
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Step 2

Substitute the values

Advanced Physics homework question answer, step 2, image 1
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Step 3

(b) Write the expression for magn...

Advanced Physics homework question answer, step 3, image 1
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