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List the following items in order of decreasing speed, from greatest to least: (A) A wind-up toy car that moves 0.10 m in 2.5 s . (B) A soccer ball that rolls 2.5 m in 0.55 s . (C) A bicycle that travels 0.60 m in 7.5×10−2 s .(D) A cat that runs 8.0 m in 2.5 s . Enter your answer as four letters separated with commas.

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Answer:

bicycle>soccer ball>cat>toy car

Explanation:

s = Distance

t = Time

Speed is given by

[tex]v=\dfrac{s}{t}[/tex]

For toy car

[tex]v=\dfrac{0.1}{2.5}=0.04\ m/s[/tex]

For soccer ball

[tex]v=\dfrac{2.5}{0.55}=4.54\ m/s[/tex]

For bicycle

[tex]v=\dfrac{0.6}{7.5\times 10^{-2}}=8\ m/s[/tex]

For cat

[tex]v=\dfrac{8}{2.5}=3.2\ m/s[/tex]

8>4.54>3.2>0.04

bicycle>soccer ball>cat>toy car

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