Q.

A particle moves along a straight line such that its displacement S varies with time ‘t’ as S=α+βt+γt2

 Column – I Column - II
I) acceleration at t=2sP)β+5γ
II) Average velocity during third secondQ)2γ
III) Velocity at t=1 sR)α
IV) initial displacementS)β+2γ

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a

I-Q, II-P, III-S, IV-R

b

I-Q, II-S, III-P, IV-Q

c

I-R, II-P, III-S, IV-Q

d

I-S, II-P, III-R, IV-S

answer is A.

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Detailed Solution

v=dsdt=β+2γt   a=dvdt=2γ So, I-Q
(v)=23vdt23dt=β(32)+γ(94)1=β+5γ So, II – P
Velocity at t=1s:v=β+2γ×1=β+2γ, So III – S
Initial displacement i.e., t = 0, S = a So, IV – R   

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A particle moves along a straight line such that its displacement S varies with time ‘t’ as S=α+βt+γt2 Column – I Column - III) acceleration at t=2sP)β+5γII) Average velocity during third secondQ)2γIII) Velocity at t=1 sR)αIV) initial displacementS)β+2γ