Question

How many times would a 80 kg person have to climb a 10 meter stairway in order to “work off” the 30 excess Calories in the cookie he or she ate?

Answer 1

Answer: 16

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1 cal = 4.186 J, 1 Calorie = 1000 cal = 1 kcal
30 kcal = 3 x 10⁴ cal = 1.2558 x 10⁵ J

E = mgh

125580=80*9.8*h

==>h=125580/80*9.8=160.17 m

so no of times he need to climb 10m wall is 160.17/10 ~=16 times

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