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Motion in A Straight Line · 2019 · 9 Apr · Shift 2

2 Physics questions from this JEE Main paper
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Motion in A Straight Line · 2019 · 9 Apr · Shift 2

2 Physics questions from this JEE Main paper

  1. Q52.The position vector of a particle changes with time according to the relation r(t)=15t2i+(4−20t2)j​ What is the magnitude of the acceleration at t = 1 ?
    Physics · Motion in A Straight Line · MCQ
  2. Q57.The position of a particle as a function of time t, is given by x(t) = at + bt2 – ct3 where a, b and c are constants. When the particle attains zero acceleration, then its velocity will be :
    Physics · Motion in A Straight Line · MCQ