Question

Identify the correct statement:

• A. For a body in motion, average speed can be zero but average velocity can not be zero
• B. For a body in motion, average velocity can be zero but average speed can not be zero
• C. For a body in motion, both average velocity and average speed can be zero
• D. For a body in motion, both average velocity and average speed can not be zero

Answer 1

The correct option is B For a body in motion, average velocity can be zero but average speed can not be zero

Average Velocity = $\frac{Totaldisplacement}{Totaltime}$

and Average Speed = $\frac{Totaldistance}{Totaltime}$
For a moving body, total displacement can be zero but total distance can never be zero.
So, Average Velocity can be zero but Average Speed can never be zero.