If the brisk walk were done at 4.0mi/h how far would the student have to walk to burn pound of fat
To determine the distance that needs to be walked to burn one pound of fat, we need to consider the number of calories burned during exercise and the number of calories in one pound of fat.
1 pound of body fat is roughly equivalent to 3,500 calories. This means that to burn one pound, you need to create a calorie deficit of 3,500 calories through exercise and/or dietary changes.
The number of calories burned during exercise depends on the intensity, duration, and the weight of the person. Let's assume that the person walking weighs 150 pounds.
The formula for calculating the calories burned during exercise is:
Calories burned = Duration (in minutes) x MET value x Weight (in kilograms)
For brisk walking, the MET value is approximately 3.6. To convert miles per hour to kilometers per hour, we multiply by 1.60934. Therefore, 4.0 mi/h is approximately 6.43 km/h.
Let's calculate the distance needed to be walked to burn one pound of fat:
1. Convert the weight from pounds to kilograms:
Weight in kilograms = Weight in pounds / 2.205
Weight in kilograms = 150 / 2.205 ≈ 68.04 kg
2. Calculate the calories burned per hour:
Calories burned per hour = Duration (in hours) x MET value x Weight (in kilograms)
Assuming a brisk walk of x hours:
Calories burned per hour = x x 3.6 x 68.04
3. Convert the calories burned per hour to calories burned in minutes:
Calories burned per minute = Calories burned per hour / 60
4. Determine the duration needed to burn one pound of fat:
Duration (in minutes) = 3,500 (calories in one pound) / Calories burned per minute
Now you can plug in the values and calculate the duration and distance:
Duration (in minutes) = 3,500 / (Calories burned per minute)
Keep in mind that this calculation will give you an estimation. Factors like individual metabolism, body composition, and other activities throughout the day can influence the actual number of calories burned.
Additionally, it's important to note that weight loss should be approached as a combination of exercise and a balanced diet, rather than relying solely on exercise. Consult with a healthcare professional or registered dietitian for personalized advice and guidance on weight loss.
The student would need to burn 3500 Calories to burn a pound of fat. The rate at which Calories are burned depends very much upon the person's weight. In addition, some people walk more efficiently than others. See
http://walking.about.com/library/cal/uccalc1.htm
for average data on the Calorie-burning rate for people of different weights.