# An athlete in the olympic games covers a distance of 100 m in 10 s. His kinetic energy can be estimated to be in the range Option 1) Option 2) Option 3) Option 4)

As we discussed in

Kinetic energy -

- wherein

kinetic Energy is never negative

Initial velocity = 0

Final velocity vf.

a = 2 m/s2

Maximum speed = at = 20 m/s2

Maximum K.E.    (Assume m = 50 kg)

If it run with constant velocity v = 10 m/s

Then K.E.

So it lies between 2500 to 10,000 J.

Correct option is 1

Option 1)

This is the correct option.

Option 2)

This is an incorrect option.

Option 3)

This is an incorrect option.

Option 4)

This is an incorrect option.

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