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Q.

Velocity of a particle moving in a straight line varies with its displacement as v=(4+4s)m/s. Displacement of a particle at time t=0 is s=0. Find displacement of particle at time t=2s.

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a

8 m

b

10 m

c

20 m

d

25 m

answer is A.

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Detailed Solution

Squaring the given equation, we get v2=4+4s.Now, comparing it with v2=u2+2as, we get u=2 m/s and a=2 m/s2Displacement at t=2 siss=ut+12at2   or   s=(2)(2)+12(2)(2)2   or   s=8 m
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