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Q.

A particle is moving along x-axis. Its x-coordinate varies with time as :x=-20+5t2For the given equation match the following two columns :

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a

(a)→q (b)→r (c)→s (d)→p

b

(a)→r (b)→q (c)→s (d)→p

c

(a)→r (b)→q (c)→p (d)→s

d

(a)→p (b)→q (c)→s (d)→r

answer is B.

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Detailed Solution

(a) x=0 at t=2 s(b)v=dxdt=10tand   a=dvdt=10(c) v=10 tv=a at 1 s∴ Velocity is positive all the time.(d) v=0 at t=0 s
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