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A particle starts from rest at t=0 and m...

A particle starts from rest at t=0 and moves in a straight line with an acceleration as shown below. The velocity of the particle at t=3 s is

A

`2 m//s`

B

`3m//s`

C

`4 m//s`

D

`6 m//s`

Text Solution

Verified by Experts

The correct Answer is:
B
The area of a-t graph gives change in velocity.
Area of a-t graph between `t=0` and `t=3 s` is
`(3xx2)+(-3xx1)=3`
`v_(t=3)-v_(t=0)=`area of a-t graph
`v_(t=3)-0=3impliesv_(t=3)=3 m//s`
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CP SINGH-MOTION IN A STRAIGHT LINE-EXERCISES
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  9. Which of the following velocity-time graphs shows a realistic situatio...

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  10. Look at the graphs Fig. 2 (NCT) .5.(a) to (d) carefully and state, wit...

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  11. The variation of velocity of a particle with time moving along a strai...

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  13. The velocity-time graph of a body moving in a straight line is given b...

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