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JIPMER2019PhysicsMotion in One Dimension

Speeds of a particle at 3rd and 8th sec are 20 ~m / s and zero respectively, then average acceleration between 3 rd and 8th sec will be

Options

  1. A3 ~m / s ^2
  2. B4 ~m / s ^2
  3. C5 ~m / s ^2
  4. D6 ~m / s ^2

Correct answer

B. 4 ~m / s ^2

Step-by-step solution

Time interval between 8 th sec. and 3rd sec t =8-3=5 ~s i.e. t=5 ~s Change in velocity V =20-0=20 ~m / s Average acceleration = V t = 20 5 =4 ~m / s ^2

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