Bicyclists in the tour de france do enormous amounts of work during a race. for example, the average power per kilogram generated by lance armstrong (m = 75.0 kg) is 6.50 w per kilogram of his body mass.
(a) how much work does he do during a 160-km race in which his average speed is 11.0 m/s?

(b) often, the work done is expressed in nutritional calories rather than in joules. express the work done in part (a) in terms of nutritional calories, noting that 1 joule = 2.389x10^-4 nutritional calories.

Explanation:

It is given that,

Average power per unit mass generated by Lance,

(a) Distance to cover race,

Average speed of the person, v = 11 m/s

If t is the time taken to cover the race.

t = 14545.46 s

Let W is the work done. The relation between the work done and the power is given by :

W = 7090911.75 J

(b) Since,

So, in 7090911.75 J,

W = 1694.01 J

Hence, this is the required solution.

in physics zero. in muscle fatigue could be high

we're given that v₀ = 0 and a = 5.4 m/s². therefore, since v = at + v₀ for constant acceleration the equation for velocity is

after 28s,

m/s

which i would round to 150 m/s as my final answer