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A track star runs the 100.0 m dash in 9.82 s. What is his speed in km/h?​

User Mior
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Final answer:

The track star's average running rate for the 100.0 m dash, which he completed in 9.82 seconds, is approximately 36.63 km/h after converting meters to kilometers and seconds to hours.

Step-by-step explanation:

To calculate the speed of the track star in km/h, we need to convert the distance from meters to kilometers and the time from seconds to hours before finding the speed.

First, we convert the distance:

  • 100.0 m = 0.100 km (since 1 km = 1000 m)

Next, we convert the time:

  • 9.82 s = 9.82/3600 h ≈ 0.002728 h (since 1 hour = 3600 seconds)

Now, we can calculate the speed using the formula:

Speed = Distance / Time

Substituting the values we get:

Speed = 0.100 km / 0.002728 h ≈ 36.63 km/h

Therefore, the track star's average running rate for the 100.0 m dash is approximately 36.63 km/h.

User David Kiger
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