Assuming a typical efficiency for energy use by the body, how many slices of pizza must you eat to walk for 2.5 h at a speed of 5.0 km/h? assume that your mass is 68 kg, metabolic power of 68 kg individual walking at 5 km/h is 380 w, and the energy content of slice of pizza is 1260 kj.

2.7 Pizzas.

Explanation:

The power required to walk through 5km in 1 hour is 380W.

A watt is basically Jules per second, then we need to standardized this measurement to second.

5km/hr is equal to,

Walking by 2.5 hours is equal to a distance of,

The total energy required then would be,

Then we know that one pizza slice gives of energy, the total pizza needed are,

Then you need to buy 3 pizza.

not moving. pos accel,