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MHT CET202123 Sep 2021Evening ShiftPhysicsMotion in One DimensionActual

A student is throwing balls vertically upwards such that he throws the 2^ nd ball when the 1^ st ball reaches maximum height. If he throws balls at an interval of 3 second, the maximum height of the balls is ( g =10 m s ^2 )

Options

  1. A45 ~m
  2. B35 ~m
  3. C25 ~m
  4. D30 ~m

Correct answer

A. 45 ~m

Step-by-step solution

At the highest point v =0 aligned & u = u - gt & u = gt =10 3=30 ~ms aligned Also 0= u ^2-2 gh h = u ^2 2 ~g = (30)^2 2 10 =45 ~m

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