1. An 364.9kg weight watcher wishes to climb a mountain to work off the equivale

Question

1. An 364.9kg weight watcher wishes to climb a mountain to work off the equivalent of a large piece of chocolate cake rated at 342.1kcal. How high must the person climb ?
2. How much calories of energy correspond to 377.787J ?
3. Convert 330.2 cal to kilojoules 1. An 364.9kg weight watcher wishes to climb a mountain to work off the equivalent of a large piece of chocolate cake rated at 342.1kcal. How high must the person climb ?
2. How much calories of energy correspond to 377.787J ?
3. Convert 330.2 cal to kilojoules
2. How much calories of energy correspond to 377.787J ?
3. Convert 330.2 cal to kilojoules

Explanation / Answer

1) let the height needed is h

total energy = m * g * h

342.1 * 10^3 * 4.186 = 364.9 * 9.8 * h

h = 400 m

he reaches to 400 m

2)

number of calories = 377.787/(4186)

number of calories = 0.090 Kcal

3)

330.2 Cal = 330.2 * 4.185 J

= 1382 J = 1.382 kJ

= 1.382 kJ

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