Question

A solid sphere falls with a terminal velocity v in air. If it is allowed to fall in vacuum,

• A. terminal velocity of sphere = v
• B. terminal velocity of sphere < v
• C. terminal velocity of sphere > v
• D. sphere never attains terminal velocity

Answer 1

The correct option is D sphere never attains terminal velocity

When a solid sphere falls in vacuum, no viscous force is acting on the sphere and the sphere falls under gravity. Due to which sphere never attains terminal velocity.