A solid sphere moves at a terminal velocity of `20ms^-1` in air at a place where `g=9.8ms^-2`. The sphere is taken in a gravity free hall having air at the same pressure and pushed down at a speed of `20 ms^-1`A. its initial acceleration will be `9.8ms^(-2)` downward.B. its initial acceleration will be `9.8ms^(-2)` upwardC. The magnitude of acceleration will decrease as the time passes.D. it will eventually stop.

A solid sphere moves at a terminal velocity of `20ms^-1` in air at a p

1.	A solid sphere moves at a terminal velocity of `20ms^-1` in air at a place where `g=9.8ms^-2`. The sphere is taken in a gravity free hall having air at the same pressure and pushed down at a speed of `20 ms^-1`A. its initial acceleration will be `9.8ms^(-2)` downward.B. its initial acceleration will be `9.8ms^(-2)` upwardC. The magnitude of acceleration will decrease as the time passes.D. it will eventually stop.
Answer» Correct Answer - B::C::D `v_(t)=(2r^(2)rhog)/(9eta)`

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