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Column I represent a particle of mass m ...

Column I represent a particle of mass `m` which is projected as represent in column I. In column II, a box of mass `m` have its initial velocity `u` and acceleration a as shown. In column III a block of mass `m` is put on wedge.

In which following speed of the particle must decrease just after the motion start?

A

(IV(i)(Q)

B

(II)(ii)(P)

C

(I)(iii)(R)

D

(II)(iii)(S)

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