A small sphere of mass m is dropped from...

A small sphere of mass m is dropped from a height After it has fallen 100 m it has attained its terminal velocity and continues to fall at that speed. The work done by air friction against the sphere during the first 100 m of fall is-

Greater than the work done by air friction in the second 100 m

Less than the work done by air friction in the second 100 m

Equal to 100 mg

Greater than 100 mg

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