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A particle moves in a straight line for ...

A particle moves in a straight line for 20 seconds with velocity 3 m/s and then moves with 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

Text Solution

Verified by Experts

The correct Answer is:
B
Avg. velocity `=(20xx3+4xx20+5xx20)/(20+20+20)=4 m//s`
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