Question

A roadrunner has been recorded reaching speeds as high as 41 km/h, although it typically runs about 35 km/h. An Olympic runner holds a speed record of approximately 23.36 mph. a) Using the 35 km/h speed for the roadrunner, who ran faster, the roadrunner or the Olympian? b) Using the 41 km/h speed for the roadrunner, who ran faster, the roadrunner or the Olympian? The 35 km/h roadrunner's speed is about __ mph, so the ___ ran faster.

a) Roadrunner, 23.36 mph
b) Olympian, 23.36 mph
c) Roadrunner, 21.75 mph
d) Olympian, 21.75 mph

Answer 1

Comparing the roadrunner's speeds converted to mi/h with the Olympian's speed, it turns out the Olympian was faster when the roadrunner ran at 35 km/h, but the roadrunner was faster at 41 km/h.

Step-by-step explanation:

To determine who ran faster, the roadrunner or the Olympian, we need to compare their speeds in the same units. We'll convert the speed of the roadrunner from kilometers per hour (km/h) to miles per hour (mi/h), since the Olympian's speed is already given in miles per hour.

Part A: 35 km/h to mi/h

Using the conversion factor 1 km/h ≈ 0.621371 mi/h:

35 km/h × 0.621371 mi/h ≈ 21.748 mi/h

Comparing this to the Olympian's speed of 23.36 mi/h:

The Olympian ran faster than the roadrunner when the roadrunner's speed is 35 km/h.

Part B: 41 km/h to mi/h

Using the same conversion factor:

41 km/h × 0.621371 mi/h ≈ 25.476 mi/h

Comparing this to the Olympian's speed of 23.36 mi/h:

The roadrunner ran faster than the Olympian when the roadrunner's speed is 41 km/h.

Therefore, the correct answer is:

The 35 km/h roadrunner's speed is about 21.75 mi/h, so the Olympian ran faster.