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  4. A particle starts from rest. Its acceleration (a) versus time (t) is as shown in the figure. The maximum speed of the particle will be

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Q. A particle starts from rest. Its acceleration (a) versus time (t)
is as shown in the figure. The maximum speed of the particle
will bePhysics Question Image

IIT JEEIIT JEE 2004

Solution:

Area under acceleration-time graph gives the change in velocity.
Hence, $ \, \, \, \, \, \, v_{max}=1/2 \times 10 \times 11=55 m/s$
Therefore, the correct option is (b).