Question

Study the given paragraph(s) and answer the following questions.

A particle is moving along a circular track of radius $3.5\mathrm{m}$with a constant speed $4{\mathrm{ms}}^{-1}$. Answer the following for the motion of the particle.

What is the average velocity of the particle in one complete round?

• A. $4{\mathrm{ms}}^{-1}$
• B. $2.6{\mathrm{ms}}^{-1}$
• C. $2{\mathrm{ms}}^{-1}$
• D. Zero

Answer 1

The correct option is D

Zero

Step 1: Given

The radius of the track = $3.5\mathrm{m}$

Speed = $4{\mathrm{ms}}^{-1}$.

Step 2: Solution

1. As average velocity is given by $V_a=\frac{TotalDisplacement}{totaltime}$
2. Displacement of the particle in one complete round is zero, hence the average velocity of the particle in one complete round is zero.

Hence option D is correct.