Chapter 35.2, Problem 5MI

Summary Introduction

To determine:

If the amount of total energy consumed is more or less than gained by food, when a person has taken 2000 calories in diet and played soccer for 2.5 hours.

Introduction:

Calorie: It is the unit of heat energy that used to measure the amount of energy is given off to the body after consuming it. Each diet provides a specific amount of calories, which can be consumed for metabolic activities.

Explanation of Solution

Given:

Energy required by body in a day = 800 Calories.

Energy required for playing soccer for one hour = 540 Calories.

Amount of energy consumed = 2000 Calories.

Calculate the total amount of energy expenditure by body by calculating energy consumption in playing soccer and energy required by the body.

  $\begin{array}{l}\text{Energy required for playing soccer for 1 hour = 540 Calories}\\ \text{Energy required for playing soccer for 2}\text{.5 hour = 540 }\times \text{ 2}\text{.5 Calories}\\ \text{Energy required for playing soccer for 2}\text{.5 hour = 1350 Calories}\\ \text{Total Energy required by body = 135}0+800\text{ Calories}\\ \text{Total Energy required by body = 215}0\text{ Calories}\end{array}$

As the total amount of energy spent is 2150, the person has spent 150 more calories than consumed.