Question

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

Answer 1

Answer: (B)

4 m/s

Answer 2

Time average velocity

=$\frac{v_{1} + v_{2} + v_{3}}{3}$ $= \frac{3 + 4 + 5}{3} = 4m/s$