The food calorie (also known as nutritional calorie and large calorie) is a term

Question

The food calorie (also known as nutritional calorie and large calorie) is a term used in place of what is otherwise known as a kilocalorie (kcal).

Not suprisingly, the food calorie is used to represent units of energy associated with eating, as in "An average hot dog with ketchup and a bun contains 315 calories."

A hungry person woke up this morning and went to the McDonald's down the street to eat a full Big Breakfast, which included hotcakes, eggs, and a large biscuit.

According to figures published by McDonald's, the Big Breakfast contains 1090 calories (meaning food calories).

How many stairs (of height 7.25 inches) would a person of mass 180.0 lbm have to climb in order to expend the calories consumed in the Big Breakfast?

How many flights of stairs consisting of 12 stairs (each of height 7.25 inches) would a person of mass 210.0 lbm have to climb in order to expend the calories consumed in the Big Breakfast?

Explanation / Answer

Mass of first man=180 lbm=180/2.2=81.8 kg

Height of each stair=7.25 inches=0.184 m

Energy gained due to Big breakfast=1090*4.2=4578 Joules

Let number of stairs to climb be=n

81.8*9.8*0.184*n=4578

n=148 stairs

Mass of second man=210 lbm=210/2.2=95.45 kg

Height of each flight of stairs=12*7.25 inche's=2.21 m

Let number of flights be n

95.45*9.8*n*2.21=4578

n=2.2 flights of stair

Related Questions

Navigate

• Browse (All)
• Browse T
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.