What is the reasonable estimate of the average kinetic energy of an athlete during a 100m race that takes 10s ?

Given info is 
Distance= 100m and Time=10s 
Velocity=100/10=10m/s 
Kinetic energy= 1/2mv^2 
Rough estimate of mass of athlete=80kg 
Ek= 1/2x80x10^2= 4000J 

Ifound this on google “two vectors are equal if they have the same magnitude and direction. they are parallel if they have the same or opposite direction. we can combine vectors by adding them, the sum of two vectors is called the resultant.” i hope this you.