Question

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

• A. Terminal velocity will be $20m/s$
• B. Terminal velocity will be less than $20m/s$
• C. Terminal velocity will be more than $20m/s$
• D. There will be no terminal velocity

Answer 1

The correct option is D There will be no terminal velocity

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