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JIPMER2018PhysicsMotion in One Dimension

A runner starts from O and goes to O following path OQRO in lhr. What is net displacement and average speed?

Options

  1. A0,3.57 ~km / hr
  2. B0,0 ~km / hr
  3. C0,2.57 km/hr
  4. D0,1 ~km / hr

Correct answer

A. 0,3.57 ~km / hr

Step-by-step solution

Runner starts from O and goes to O . So, net displacement is zero. aligned Average speed & = Total distance Total time & = OQ + QR + RO total time aligned aligned & 1 ~km +(2 r ) ( 1 4 )+1 ~km 1 hr = & 2+ 2 =3.57 ~km / hr aligned

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