Conversion Factors 1.25 inches = 2.155 pounds = 3.84 kilograms = 4.5 liters = 5.1200 kgm/min = 6.4.5 liters = 7.60 ml/kg = 8.510 = 9.2.0 L0 = 10.5 mph = meters, kilograms, pounds, milliliters, Watts, ml/kg (180-pound person), liters (125-pound person), cm, kcal, meters per minute (m/min)
The Correct Answer and Explanation is:
Here are the correct answers for the conversion problems shown in the image, followed by a 300-word explanation.
Answers:
- 25 inches = 0.635 meters
- 155 pounds = 70.31 kilograms
- 84 kilograms = 185.19 pounds
- 5 liters = 5000 milliliters
- 1200 kgm/min = 196.13 Watts
- 4.5 liters = 25 ml/kg (180 pound person)
- 60 ml/kg = 3.41 liters (125 pound person)
- 5’10” = 177.8 cm
- 2.0 LO₂ = 10.0 kcal
- 5 mph = 134.11 meters per minute (m/min)
Explanation:
Unit conversions are essential in science and health fields where data from different systems must be compared or standardized. The metric system (meters, liters, grams) is often used globally, whereas the imperial system (inches, pounds, miles) is common in the United States. Here’s a breakdown of the conversions used above:
- Inches to meters: Multiply by 0.0254
- Pounds to kilograms: Multiply by 0.4536
- Kilograms to pounds: Multiply by 2.2046
- Liters to milliliters: Multiply by 1000
- kgm/min to Watts: Multiply by 0.163
- VO₂ to kcal: Multiply liters of oxygen by 5 (1 liter of oxygen ≈ 5 kcal energy expended)
- Height conversion (feet and inches to cm): Convert feet and inches to total inches, then multiply by 2.54
- ml/kg to liters: Multiply by body weight in kg, then convert ml to liters
- mph to meters/min: Multiply by 26.8224
Knowing how to perform these conversions allows for consistency in calculations and comparisons across different datasets, especially in clinical, athletic, and engineering contexts. For example, when calculating a person’s energy expenditure or dosing medication, having accurate unit conversions prevents errors and ensures safety and effectiveness.
