Practice problem

Math Artifacts

Track and Pool\text{Track and Pool}

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A basilisk lizard.

Usain Bolt is the world's fastest human on land, holding the record of 9.58 seconds for the 100 meter dash. César Cielo is the world's fastest human in water, holding the record for 21.30 seconds for the 50 meter freestyle swim. Can both be combined? The basilisk lizard is able to sprint so quickly that it runs over the surface of the water, not using surface tension like an insect, but through sheer speed and power.

According to Popular Mechanics, researchers have concluded that in order to run on water, you'd need to run roughly at the speed of a car on a highway (about 65 mph or 105 km/h). How many times as fast as Usain Bolt is that?

Choose one answer

Type a concept, like “slope” or “photosynthesis”.

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