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Question

Physics Question on mechanical properties of fluid

A solid sphere falls with a terminal velocity of 20m/s20\, m/s in air. If it is allowed to fall in vacuum?

A

the terminal velocity will be 20 m/s

B

the terminal velocity will be less than 20 m/s

C

the terminal velocity will be more than 20 m/s

D

there will be no terminal velocity

Answer

there will be no terminal velocity

Explanation

Solution

As in vacuum, there is no viscosity, no resistive force and hence no terminal velocity can be acquired.