Cyclist speed

A cyclist covered a track of 40 m in 5 s. The first section of the 30 m track was covered in 3 s; the remaining section was covered in 2 s. Specify:

a) the average speed of the cyclist on the first section of the track
b) the average speed of the cyclist on the second section of the track
c) the average speed of the cyclist on the entire track

Final Answer:

a =  10 m/s
b =  5 m/s
c =  8 m/s

Step-by-step explanation:

$a=30/3=10\text{m/s}$

$b=(40-30)/2=5\text{m/s}$

$c=(a\cdot 3+b\cdot 2)/(3+2)=(10\cdot 3+5\cdot 2)/(3+2)=8\text{m/s}$

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