Q. A particle moves for $20\ seconds$ with velocity $3\ m/s$ and then velocity $4\ m/s$ for another $20\ seconds$ and finally moves with velocity $5\ m/s$ for next $20\ seconds$. What is the average velocity of the particle
A) $3\ m/s$
B) $4\ m/s$
C) $5\ m/s$
D) Zero
Explanation
(b) Time average velocity $= \frac{v_{1} + v_{2} + v_{3}}{3} = \frac{3 + 4 + 5}{3} = 4m/s$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.