# Speed and Power from the energy content of one M&M candy

1. Oct 4, 2016

### BavarianBrew

1. The problem statement, all variables and given/known data

I would like to know how fast one M&M could make me run.
One M&M can provide about 12600 J of energy, I weight 68.5 kg.

1)Does this mean I COULD run at about 19 m/s for a fraction of a second using Ke equation?
(I know the human body is complex, muscles are about 25% efficient)

2) I would like to calculate my NEGATIVE work in joules from raising in my hand a 1kg mass, 1m height

3) How many M&M's would I have to eat to raise this?

4) If I want to do question #2 in one second what variable do I need to know to calculate how many M&M's I would need

2. Relevant equations

ke=.5mv^2

P= mass*gravity*distance/time

-W=mass*gravity*distance

3. The attempt at a solution

1) 19 m/s solving for velocity not factoring muscle efficiency or other variables
2) -9.8 joules
3) -9.8/12600=.0008
4) ???

Thanks!!! I am trying to design a lab for kids.

2. Oct 4, 2016