Laws of MotionHard

Question

A block is placed on a n inclined planed moving towards right horizontally with an acceleration a0 = g. The length of the plane AC = 1m. Friction is absent everywhere. The time taken by the block to reach from C to A is (g=10 m/s2)

Options

A.1.2 s
B.0.74 s
C.2.56 s
D.0.42 s

Solution


FBD of block w.r.t wedge
Acceleration of block w.r.t wedge
= g
now from S = ut + at2 , 1 = gt2
⇒ t = = 0.74 s

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