Problem 49077. Velocity Conversion

Created by Doddy Kastanya

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Given a velocity in mph, convert it to km/h. Round the answer to the fourth decimal place.

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Last Solution submitted on Jun 19, 2025

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Rafael S.T. Vieira on 29 Oct 2022

Constant 1.60934

Cinzia on 7 Sep 2023

With problems from this user, you have to first reverse engineer the conversion constant, because it has more digits than the one google proposes.

Camden on 21 Nov 2023

The test cases for this problem are stupid. Even when using the real conversion factors and rounding to 4 decimal places, the test cases are still off by 0.001 and 0.002. Realistically there should a be a buffer of at least 0.01.

若涵 on 1 Jun 2024

Why can't I pass the first test ?

Alex on 25 Jun 2024

The statute mile was standardised between the Commonwealth of Nations and the United States by an international agreement in 1959, when it was formally redefined with respect to SI units as exactly 1,609.344 metres.

Andrew on 7 Jan 2025

DO NOT EVEN BOTHER WITH THIS GUY'S PROBLEM SET

He is basing all of these "conversion" calculations on dodgy conversion factors, rather than unit cancellation. For example, converting square feet to square meters *should be* squaring the conversion factor between feet and meters and multiplying by that, rather than memorizing another different magic number for area. What about volume? Do we have to memorize another magic number for volume, and have it be off by precisely as much as this guy expects it to be off by? Besides, even if the goal of unit conversion in this guy's mind is to memorize a bunch of different multiplication factors, they won't be right because he insists on exact equality rather than within a tolerance.

Instead of this nonsense, go do a problem set written by someone who understands the material and understands how to do unit tests

/rant

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Problem 49077. Velocity Conversion

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Problem 49077. Velocity Conversion

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