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NEETPhysicsMotion in Two Dimensions

The position of a particle is given by r=3.0t-2.0 t ² j +4.0 k where t is in seconds and the coefficients have the proper units for r to be in meters. Find the v and a of the particle?

Options

  1. Aa ( t )=-~4.0 j ~,~v ( t )=~3.0 i +3.0 j
  2. Ba ( t )=~5.0 j ~,~v ( t )=~4.0 i +4.0 j
  3. Ca ( t )=~-4.0 j ~,~v ( t )=~3.0 i -4.0 j
  4. Da ( t )=~-5.0 j ~,~v ( t )=~3.0 i +4.0 j

Correct answer

C. a ( t )=~-4.0 j ~,~v ( t )=~3.0 i -4.0 j

Step-by-step solution

Correct Option is : (C) a ( t )=~-4.0 j ~,~v ( t )=~3.0 i -4.0 j

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