A particle moves for 20 ,seconds with velocity 3 ,m/s and then velocity 4, m/s for another 20 ,secon

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2.Motion in Straight Line

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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..........$m/s$

A

$3$

B

$4$

C

$5$

D

$0$

Solution

(b) Time average velocity =$\frac{{{v_1} + {v_2} + {v_3}}}{3}$$ = \frac{{3 + 4 + 5}}{3} = 4m/s$

Standard 11

Physics

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