An object moving along x -axis with a uniform acceleration has velocity v → = 12 cm s - 1 i ^ at x = 3 cm . After 2 s if it is at x = - 5 cm , then its acceleration is,

Question

An object moving along x -axis with a uniform acceleration has velocity v → = 12 cm s - 1 i ^ at x = 3 cm . After 2 s if it is at x = - 5 cm , then its acceleration is,, a → = - 16 cm s - 2 i ^, a → = 11 cm s - 2 i ^, a → = - 11 cms - 2 i ^, a → = 8 cm s - 2 i ^

MARKS App · Accepted Answer

Applying equation of motion in vector form, we get s → = u → t + 1 2 a → t 2 ⇒ - 5 i ^ - 3 i ^ = 12 i ^ × 2 + 1 2 × a → × 2 2 ⇒ - 8 i ^ = 24 i ^ + 2 a → ⇒ a → = - 16 cm s - 2 i ^

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