An athlete in the Olympic gamed covers a distance of `100 m` in `10 s`. His kinetic energy can be estimated to be in range.
(1) `200 J - 500 J`
(2) `2 xx 10^(5) J - 3 xx 10^(5) J`
(3) `20,000 J - 50,000 J`
(4) `2,000 J - 5,000 J`.

Explanation

Approximate mass of the athlete = 60 kg
Average velocity = `10 m/s`
` = 1/2 xx 60 xx10^(@) = 3000J`
Range of KE = `2000 J to 5000 J`