For lunch, your friend, who has a mass of 70.0 kg, has a slice of pizza, a cola soft drink, and ice cream.
Item | Carbohydrate (g) | Fat (g) | Protein (g) |
Piza | 29 | 10. | 13 |
Cola | 51 | 0 | 0 |
Ice cream | 44 | 28 | 8 |
a. Using Table 1, calculate the total kilocalories for each food type in this meal (round off the kilocalories to the tens place).
b. Determine the total kilocalories for the meal (round off to the tens place).
c. Using Table 2, determine the number of hours of sitting needed to burn off the kilocalories in this meal.
d. Using Table 2, determine the number of hours of swimming needed to burn off the kilocalories in this meal.
Table 1 Energy Values for the Three Food Types
Food Type | (kJ/g) | (kcal/g) |
Carbohydrate | 17 | 4 |
Fat | 38 | 9 |
Protein | 17 | 4 |
Table 2 Energy Expended by a 70.0-kg (154-lb) Adult
Activity | Energy (kJ/h) | Energy (kcal/h) |
Sleeping | 250 | 60 |
Sitting | 420 | 100 |
Walking | 840 | 200 |
Swimming | 2100 | 500 |
Running | 3100 | 750 |
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