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Questions  

The acceleration of a particle starting from rest and travelling along a straight line is shown in figure. The maximum speed of the particle is

a
20ms−1
b
30ms−1
c
40ms−1
d
60ms−1

detailed solution

Correct option is B

Maximum speed is at t = 8 s.v at t = 8 s is given by area under curve OABC.Maximum speed =12(AB+OC)×BC=12×(12)×5=30ms−1

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