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A sprinter ran the 400 meter dash in 44.62 seconds. Convert her speed into miles per hour

Sagot :

Answer:

v = 20.7 mph

Step-by-step explanation:

Given that,

Distance, d = 400 m

Time, t = 44.62 s =

We need to find the speed of the sprinter. The speed of an object is defined as total distance covered divided by time taken. It can be given by :

[tex]v=\dfrac{d}{t}\\\\=\dfrac{0.248\ mile}{0.012\ s}\ (As\ 1\ m=0.000621371\ mile)\\\\=20.7\ mph[/tex]

Hence, the speed of the sprinter is equal to 20.7 mph.

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