contestada

usain bolt, a Jamaica retired sprinter and world record holder in the 100 meters, 200 meters and 4 × 100 meters relay, has an average speed of 23.35 mph. if he runs at this speed in an 80-meter race, in the course of 5 seconds, how many meters he has completed of the race?

Respuesta :

carlosego

For this case we have the following conversion of units:

[tex] 1mi = 1609m [/tex]

[tex] 1h = 3600s [/tex]

Thus, applying the conversion of units we have:

[tex] (23.35 \frac{mi}{h}) (\frac{1609}{1}\frac{m}{mi}) (\frac {1}{3600}\frac{h}{s}) = 10.4 \frac{m}{s} [/tex]

Then, the distance traveled for 5 seconds is given by:

[tex] d = (10.4) (5) [/tex]

[tex] d = 52m [/tex]

Answer:

he has completed 52 meters of the 80-meter race

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