The displacement of a particle is given by x = ( t − 2 ) 2 , where x is in meters and t is in second. The distance covered (in meter) by the particle in first 4 seconds is

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x = ( t − 2 ) 2 , x ( 0 ) = 4 , x ( 2 ) = 0 , x ( 4 ) = 4 . Distance = ∣4 − 0∣ + ∣0 − 4∣ = 8 m

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